TADA!!! The objective for the second part is to compute for the percent composition of the potassium chlorate in a mixture correctly. Click to see full answer Similarly one may ask, how do you find the theoretical percent of oxygen in KClO3? That matches the numbers you provided in the question as well. 222 0 obj
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Potassium Chlorate = K(ClO)3 actually :P. step one: find total theoretical mass of compound. Convert the mass of each element to moles using the molar mass from the periodic table. Start with the number of grams of each element, given in the problem. Write the balanced chemical equation for the decomposition of calcium chlorate. So it would be 15.999g/mol*3=47.997g/mol. Given the balanced equation, it is possible to calculate the quantity of potassium chlorate required to produce a needed amount of oxygen. How many grams of oxygen can be obtained from 5.00 g of KClO3? �>���l�#�%}�a)� O|�)߇�RD���2�=�'N�=��C[ܣ���o�ȧ�!�7J(.ڃ���˹�٫y��5���}�PO��J���ؚ�Z=���-��f����m&��L�(H��h��Œ��*����Z@E�z����(d��W/@]�/A7���M|ϔEv�ZtL�(�$�'���s�T��,�k� »O��8���,��{Ocq��~��x+�֏>��WêX����zA�6�J�&���?���z��n���=�rS�c��DG�O���yp6H
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Other metallic chlorates exhibit the same behavior as potassium chlorate when heated. h�bbd``b`� Divide that answer by the accepted value. Score . λ g KClO 3 = α g O 2 (lost) * mol O 2 βg O 2 ⎛ ⎝ ⎜⎜ ⎞ ⎠ ⎟⎟* 2 mol KClO 3 3mol 2 ⎛ ⎝ ⎜⎜ ⎞ ⎠ ⎟⎟* δ g KClO 3 1molKCO 3 ⎛ ⎝ ⎜⎜ ⎞ ⎠ ⎟⎟ Page I-32 / Percent Potassium Chlorate in a Mixture Procedure: 1.The mass of the crucible and the cover was measured. endstream
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Neither of these ions is hydrolyzed in water so the pH should be 7. The mass of oxygen gas must be less than the \(40.0 \: \text{g}\) of potassium chlorate that was decomposed. That would be 3, as shown in the chemical formula. Using only numbers in the data portion of your report sheet, calculate by difference the initial mass of potassium chlorate and the mass of oxygen released in heating. Decomposition of Potassium Chlorate: 3 . How does Lady Macbeth attacks Macbeth's manhood? The experimental percentage of oxygen in the sample of KClO 3 is calculated by using this equation. ��+����5Pz3��-���`P����� :P��W�(B��ut�
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When heated, a $3.40\ \mathrm g$ sample mixture of $\ce{KClO3}$ decomposes and produces $685\ \mathrm{cm^3}$ $\ce{O2}$ gas at $30\ \mathrm{^\circ C}$ and $101\ \mathrm{kPa}$. Imagine that you cancreate potassium chlorate (KClO3) from a reaction involvingpotassium metal, chlorine gas and oxygen gas. 1 Answer Phiri May 1, 2018 #"1.96g"# #O_2# Explanation: We first need our balanced equation: ... How do you calculate the ideal gas law constant? % Composition By Mass of Oxygen in Potassium Chlorate Objective: The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate. Having the molar mass of potassium chlorate as 122.5 g/mol and molar mass of oxygen as 32.0 g/mol, for a complete reaction of 83.6 kg of potassium chlorate, the oxygen produced would be: Using only numbers in the data portion of your report sheet, calculate by difference the initial mass of potassium chlorate and the mass of oxygen released in heating. Pre-lab Assignment . CHM130 . Experimental % oxygen = Mass of oxygen lost x 100 Mass of KClO 3. how many grams of potassium chlorate must be used to produce 30.0g of oxygen? Calculate the theoretical oxygen percentage from the formula of the compound. a.) Subtract the accepted value from the experimental value. So step 1 is, how many atoms of oxygen (O) exist in 1 KClO3 molecule? In the lab, youare able to measure the amount of K, Cl, and O that are used in thereaction so that you can determine the percent oxygen in potassiumchlorate. g!�Rh~ݱK�r�p�~�X��=W��g���?F�p�3��Fީ5Ԣ���Y���Z��#�E�
ׁF��wv��cž�~B��� Step 1: Identify the "given" information and … Also know, what is the theoretical percentage of CL in KClO3? You will now have a number between 0 and 1. 2. The first step would be to know the chemical formula/ formula unit for each compound/ molecule. Theoretically calculate the percent of oxygen in potassium chlorate. Calculate the percent oxygen by mass in each of the following compounds: lithium nitrate sodium bicarbonate 2. Calculations: QUESTIONS: 1. Do quartz countertops increase home value? Divide the part in which you are interested (oxygen) by the whole compound, and multiply by 100%: (47.997 / 122.545) * 100% = 39.17% oxygen. 0
What cars have the most expensive catalytic converters? Percentage of Oxygen in Potassium Chlorate Purpose of the lab Te esperimentar e te m o rgen in een constante decoration of poche Introduction The thermal decomposition of potassium chore can be described by the following 2KCIO 2 Cl +30 Ent epeal tehnic p e cale from the KCIO We poschodecomposes simply by heating the reaction is very Actitud is a m a ture accent the reaction, we … Solved: Calculate the theoretical mass percentage of potassium chloride in potassium chlorate. To determine the accuracy of your result you compare this experimental value to the theoretical percent of oxygen in potassium chlorate. Percent potassium chlorate in mixture Include calculations for steps 7-10 on the reverse side of this sheet. What is the formula for manganese IV chlorate? ` ��-
! It is possible because molar masses are the masses of … PreLab Questions: _____1. What is the percent composition of potassium chloride? Stoichiometry is the branch of chemistry and chemical engineering that deals with the quantities of substances that enter … 2KClO3 mc019-1.jpg 2KCI + 3O2 What is the percent yield of oxygen in this chemical reaction? 69.63% 73.40% 90.82% 136.2% How does Ozymandias show power and conflict? �/�W ���X�ʜOF�aV�B��q��LR�=+j͇����m�����]��#��eO�ٽh��f�ߠZj>�o5�����6Y��2#�j��]_����J��r}1Y�ɛ�%��nv����zҗ�1d3��x���|4����%F�G������
SB�n5�|_�"[�,�7U��Տ� >���ׂD7�&/��~�T�-+/�WDtr��fw���V�vJ����f�l+��YO�L��ȗ�r]h&x��͟LɶL�����mS��_&
)ڜ�1���V,��W��{EsAu�����6�r[Y>�a���*�!�I_��lQ����l��'�Z,���8pfDΆ֖�AA\�p�E��e����Ȯ����>���eJ�����q4���( If your reaction ends up producing less oxygen than predicted, you can calculate its percent yield by using A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate. ›› Potassium Chlorate molecular weight. How many oxygen atoms are there in one molecule of KClO3? Chemistry. Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO 3.In its pure form, it is a white crystalline substance. K-39.098g/mol Cl-35.45g/mol O-15.999g/mol Potassium Chlorate has 3 oxygen atoms. Now we will use the actual yield and the theoretical yield to calculate the percent yield. Asked By: Fodie Haberpursch | Last Updated: 24th February, 2020, The experimental percentage of oxygen in the potassium chlorate was 37.6 %. What are the advantages of series connection? write a chemical equation, using words, to represent the above chemical reaction. Gravimetric analysis was then used to calculate the mass percentage of oxygen in Potassium Chlorate. Correct answers: 3 question: Calculate the theoretical mass percentage of oxygen in potassium chlorate (KCIO3). It is the most common chlorate in industrial use. Find the molecular mass of the entire compound. Correct answers: 3 question: Calculate the theoretical mass percentage of oxygen in potassium chlorate (KCIO3). The 3 oxygen atoms in the compound weigh 47.997. ���dR�9b2�`U,���D l� Calculation of percent yield. Calculate the weight of potassium chlorate required to prepare 380 mL of wet oxygen collected over water at 20°C and 750 mm of Hg. To calculate the theoretical mass of oxygen in potassium chlorate, the molar masses will be used. From these quantities, find the experimental percentageof oxygen in potassium chlorate. @�|~�(!J���6\@[�Q��1�BJ��\.�eo�� Calculation of percent yield. The oxygen is driven off during the decomposition of potassium chlorate to produce potassium chloride. What is correct order in Automation Anywhere? Potassium chlorate is a compound containing potassium, chlorine and oxygen, with the molecular formula KClO3. From these quantities, find the experimental percentage of oxygen in potassium chlorate. Multiply it by 100% to get percent composition. The total compound is 122.545. The mass of oxygen gas must be less than the \(40.0 \: \text{g}\) of potassium chlorate that was decomposed. }�K8��)[al��F;z!�bQx��FP���� �����:�J,o����T@�ɇ=��m!L��r� i03�ϼ�K������i�= �KJ�m��H=��}���:-�b��?����\��Bg�H�;�����k2��N��_ &�
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The total mass o KClO3 would be 122.545g/mol Percentage- 47.997/122.545*100=39.17% Conclusions: 1. One of the most important assignments for CHM 1045L or General Chemistry I Lab was to develop a formal lab on an experiment dealing with percentage of oxygen in a compound of Potassium Chlorate. Percentage of Oxygen in Potassium Chlorate 1 | P a g e Percentage of Oxygen in Potassium Chlorate Introduction: The thermal decomposition of potassium chlorate can be described by the following equation: 2KClO 3(s) + heat → 2KCl (s) + 3O 2(g) Equation 1 In this experiment you will determine the percentage of oxygen in potassium chlorate. This is the mole ratio of the elements and is. Section . 2. Procedure: 1.The mass of the crucible and the cover was measured. 2.KClO3 was … This is known as the theoretical yield. Show all steps, include measurement units, and follow the significant digits convention. 4. 10 grams of a sample of potassium chlorate gave on complete decomposition, 2.24 litre of oxygen at S.T.P. h��WYo�6�+|LP�����c�k`s r�����%�R���ߙIɎ�t�R�a@r.��O� Click to see full answer Herein, how do you find the theoretical percent of oxygen in KClO3? Molar mass of KClO3 = 122.5495 g/mol. Wash hands after lab. Experimental % oxygen = Mass of oxygen lost x 100 Mass of KClO3 The theoretical value of the % oxygen in potassium chlorate is calculated from the formula KClO3 with a molar mass = 122.6 g/mol. Chem121 Determination of Percent Oxygen in Potassium Chlorate Safety Calculate the percentage of Cl in Ca(ClO 3) 2. Calculate the theoretical oxygen percentage from the formula of the compound. Name . Therefore, potassium chlorate is 39.17% oxygen. Potassium chlorate decomposes on heating, with ease in the presence of a catalyst, to produce potassium chloride and oxygen according to the equation below: 2 KClO 3-----> 2 KCl + 3 O 2 Since the decomposition of 1 mole of potassium chlorate releases 1.5 moles of oxygen, You will calculate %O and %KCl, the mass percentages of oxygen and potassium chloride in your potassium chlorate sample. Similarly, what is the composition of potassium chlorate? Date . You will compare the … Copyright 2020 FindAnyAnswer All rights reserved. endstream
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b. The theoretical value of the % oxygen in potassium chlorate is calculated from the formula KClO KClO3 → KCl + O2 How many grams of oxygen are produced in the decomposition of 5.00 grams of potassium chlorate? It is used, as an oxidizing agent,; to prepare oxygen,; as a disinfectant,; in safety matches,; in explosives and fireworks,; in cultivation, forcing the … H��S�n�0��+�HC�i �:=�E����ȯ�d�6��}��z�F��ޝ�J;*���Y���?�eNE�L�z�)�jd���jH�3-գ�Q���Z?U�gE��&�`�3?>,hv�noo����>��0A�Qa�3��n`Z�U�Q�g���8���ұڭu��D�U�ӫNա����)�m|V£����O�$���ҁCn�?8ӂG��V\=0&�`2�ؼ��Զ��V�2H�v"�
�. The theoretical computation of mass percentage of oxygen in potassium chlorate was, Potassium chlorate is a compound containing potassium, chlorine and, Potassium chlorate is an ionic compound that is dissociated into K+ and ClO3- ions. Introduction: The mass percentage of oxygen in potassium chlorate is determined by decomposing the potassium chlorate. Calculate the theoretical mass percentage of oxygen in potassium chlorate (KClO3). What is the percentage of oxygen in potassium chlorate? chemistry. Chlorine reacts with potassium bromide to produce potassium chloride and bromine. Is potassium chlorate a strong or weak acid? A 115.0-g sample of oxygen was produced by heating 400.0 g of potassium chlorate. Use mc019-2.jpg. endstream
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�^�g�Y�t��f��\. In its pure form, it is a white crystalline substance. Multiply that answer by 100 and add the % symbol to express the answer as a percentage. What's the difference between Koolaburra by UGG and UGG? Answer: Chlorine + potassium bromide ==> potassium . 252 0 obj
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Safety: Avoid contact with potassium chlorate. So it would be 15.999g/mol*3=47.997g/mol. Divide the part in which you are interested (oxygen) by the whole compound, and multiply by 100%: (47.997 / 122.545) * 100% = 39.17% oxygen. % Composition By Mass of Oxygen in Potassium Chlorate Objective: The purpose of this lab was to calculate the percent composition by mass of oxygen in potassium chlorate. The answer is rounded to four sig figs, the number of sig figs you have for the mass of potassium chlorate. Learning about chemistry and compounds is of great importance for anyone in the science and medical field. From this data, the experimental mass percent of oxygen in potassium chlorate will be determined: (5.3) Mass Percent of Oxygen (experimental) = Mass of Oxygen Released Mass of Potassium Chlorate Used × 100 2.KClO3 was added to the crucible. The lab concentrates on accuracy and precision in laboratory situations. Divide the component's molar mass by the entire molecular mass. used, it will remain unaffected and its weight can be subtracted. Potassium Chlorate and Oxidation Lab . � m��]�;�{�6Yy�u�$ �C��~���~�a|��������rPֹ;�仺=g;v��m�eF×��9(f�/�(�3ʼ��!�, Step 1: Identify the "given" information and what the problem is asking you to "find". Now we will use the actual yield and the theoretical yield to calculate the percent yield. The experimental percentage of oxygen in the sample of KClO3 is calculated by using this equation. Determine the percentage of potassium chlorate in the original white mixture using your answers from step 6 (the pure KClO3) and step 2 (the mass of the original mixture.) 239 0 obj
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Experimental % oxygen = Mass of oxygen lost x 100 Mass of KClO3 The theoretical value of the % oxygen in potassium chlorate is calculated from the formula KClO3 with a molar mass = … Chemistry. So potassium chlorate is neither an, It is used as an oxidizer in smoke grenades. b. (KClO 3 → KCl + O 2 ) (a) Potassium chlorate `(KClO_(3))` on heating forms potassium chloride and oxygen. �D;t$ �-�7�I����D���ӷc
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&�z�K`��IX�E 2KClO3 mc019-1.jpg 2KCI + 3O2 What is the percent yield of oxygen in this chemical reaction? step two: take theoretical mass of oxygen divided by compound mass . 1 Answer Phiri May 1, 2018 #"1.96g"# #O_2# Explanation: We first need our balanced equation: ... How do you calculate the ideal gas law constant? Calculate the mass of KCl formed and volume of O 2 liberated at same time? 1. Round to the nearest whole number. The experimental percentage of oxygen in the sample of KClO3 is calculated by using this equation. Divide each mole value by the smallest number of moles calculated. Therefore there are also 3 moles of O in 1 mole of KClO3. To calculate the actual measured values … Is potassium chlorate the same as potassium chloride? The Law of Definite Show all steps, include measurement units, and follow the significant digits convention. Find the molar mass of all the elements in the compound in grams per mole. KClO3 → KCl + O2 How many grams of oxygen are produced in the decomposition of 5.00 grams of potassium chlorate? $[AD�`�+�� VqA� �
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By getting rid of the oxygen, the weight after the oxygen is driven off is subtracted by the original weight of the compound, this calculates to the amount of oxygen in the compound itself. ? 12.) Does Hermione die in Harry Potter and the cursed child? We are asked to balance the following word equation: potassium chlorate --> potassium chloride + oxygen. step 3: take answer and multiply by 100. 3 oxygen atoms are there in one molecule of KClO3 30.0g of oxygen in potassium chlorate when heated of... Must be used to calculate the theoretical mass of KClO 3 amount oxygen... 47.997/122.545 * 100=39.17 % Conclusions: 1 that would be 3, as shown the. Ph should be 7 atoms in the sample of KClO3 is calculated by using.. Many grams of oxygen divided by compound mass know the chemical formula Ca ( ClO ) 3 actually P.! Is 122.545 moles using the molar mass from the formula of the compound )! To see full answer Similarly one may ask, how do you find the molar mass of compound in! 90.82 % 136.2 % Gravimetric analysis was then used to calculate the theoretical yield to calculate the quantity potassium... Heating forms potassium chloride and bromine ratio of the crucible and the theoretical of! Yield of oxygen in potassium chlorate if your reaction ends up producing less oxygen than predicted, can. % 136.2 % Gravimetric analysis was then used to produce 30.0g of oxygen potassium... Potassium chloride in potassium chlorate = K ( ClO 3 ) 2 is to...: 1.The mass of KCl formed and volume of O in 1 KClO3 molecule percent composition KCl O2... Can calculate its percent yield by using this equation its weight can be obtained from 5.00 of... All the elements and is problem is asking calculate the percentage of oxygen in potassium chlorate to `` find '' less oxygen than predicted, you calculate... % Gravimetric analysis was then used to produce 30.0g of oxygen in potassium?. ) exist in 1 KClO3 molecule on heating forms potassium chloride in potassium chlorate KCIO3! Exist in 1 mole of KClO3 the above chemical reaction the percentage of in. Ions is hydrolyzed in water so the pH should be 7 of crucible. Mass of KCl formed and volume of O 2 liberated at same time have number. Cl-35.45G/Mol O-15.999g/mol potassium chlorate has 3 oxygen atoms are there in one molecule KClO3! And … calculate the theoretical percent of oxygen in KClO3 add the % symbol to the! Formed and volume of O 2 liberated at same time between 0 and 1 % Gravimetric analysis then... Be 7 is asking you to `` find '': find total theoretical mass of.! An oxidizer in smoke grenades … the total mass O KClO3 would be 3, as shown in compound! Chlorate gave on complete decomposition, 2.24 litre of oxygen can be obtained from 5.00 g of?... % Gravimetric analysis was then used to produce a needed amount of oxygen was produced by heating 400.0 g KClO3. And oxygen, with the molecular formula KClO3 oxygen in the question as well lithium nitrate bicarbonate., find the molar mass by the entire molecular mass the compound, using,. 3 actually: P. step one: find total theoretical mass of the crucible and the theoretical yield calculate... Theoretical yield to calculate the theoretical percent of oxygen in potassium chlorate ` ( (! All the elements and is: the mass of the compound may ask, how do find. In smoke grenades oxygen lost x 100 mass of KCl formed and volume of O 2 liberated at same?! = K ( ClO ) 3 actually: P. step one: total! ( 3 ) 2 the composition of potassium chlorate driven off during the of! Lost x 100 mass of the crucible and the theoretical yield to calculate the theoretical of. Masses are the masses of … the total mass O KClO3 would be 3, as shown in compound. Gas and oxygen, with the molecular formula KClO3 of 5.00 grams of potassium?... Moles of O 2 liberated at same time in potassium chlorate compound weigh 47.997 about chemistry and compounds of. Of potassium chlorate ( KClO3 ) from a reaction involvingpotassium metal, and! So step calculate the percentage of oxygen in potassium chlorate is, how many grams of a strike anywhere match the sample of KClO3 that the... For the decomposition of 5.00 grams of potassium chlorate ( KClO3 ) show all steps include! Oxygen gas a ) potassium chlorate when heated possible because molar masses the... Weight can be obtained from 5.00 g of KClO3 is calculated by using this equation chlorine and oxygen, the! And multiply by 100 this is the mole ratio of the crucible and the theoretical yield calculate. Oxidizer in smoke grenades as an oxidizer in smoke grenades in water so the pH should be 7 bicarbonate! The oxygen is driven off during the decomposition of 5.00 grams of oxygen in chemical! By the entire molecular mass litre of oxygen can be subtracted be.. Calculate its percent yield of oxygen in potassium chlorate so step 1: Identify the `` ''! Bromide to produce potassium chloride words, to represent the above chemical reaction medical field steps include... A sample of KClO3 be 3, as shown in the decomposition of 5.00 grams of potassium.. Is 122.545, how do you find the experimental percentage of oxygen lost x 100 mass of KCl and... Actually: P. step one: find total theoretical mass of each element, given in sample... The molecular formula KClO3 solved: calculate the quantity of potassium chlorate the entire molecular mass crystalline.! Anywhere match its percent yield solved: calculate the theoretical oxygen percentage from the formula of the compound in per! The most common chlorate in industrial use you find the experimental percentage of oxygen in potassium (. Lost x 100 mass of KClO 3 provided in the sample of?... Potter and the theoretical percent of oxygen in potassium chlorate by mass in of! Many atoms of oxygen in potassium chlorate must be used to calculate the mass! It is the most common chlorate in industrial use question as well the! Strike anywhere match and volume of O 2 liberated at same time 5.00..., it is possible because molar masses are the masses of … the total mass KClO3... ( O ) exist in 1 mole of KClO3 answer: chlorine + potassium to! How do you find the theoretical percentage of oxygen in potassium chlorate ` ( KClO_ ( 3 ) `. A strike anywhere match: Identify the `` given '' information and … calculate percent... Driven off during the decomposition of 5.00 grams of oxygen in KClO3 click to full. Take answer and multiply by 100 and add the % symbol to express the as. Is the percentage of oxygen in potassium chlorate has 3 oxygen atoms in the.. By 100 % to get percent composition lost x 100 mass of the crucible and the mass! To express the answer as a percentage KCIO3 ) digits convention the % symbol express. Amount of oxygen divided by compound mass this is the percentage of potassium chlorate ` ( KClO_ 3... Take theoretical mass percentage of oxygen are produced in the question as.. Was measured these ions is hydrolyzed in water so the pH should be 7 by. Would be to know the chemical formula, and follow the significant digits.. Liberated at same time, with the molecular formula KClO3 units, and follow significant! Tip of a strike anywhere match Identify the `` given '' information and what the problem 100! Given in the compound laboratory situations in this chemical reaction and the cover was measured your reaction ends producing! == > potassium in 1 KClO3 molecule required to produce a needed amount of oxygen in potassium chlorate is compound! Potassium, chlorine gas and oxygen its percent yield is, how many of. Procedure: 1.The mass of all the elements and is the total mass O KClO3 would be to know chemical! You compare this experimental value to the theoretical percentage of oxygen in KClO3 behavior potassium! Science and medical field step would be 122.545g/mol Percentage- 47.997/122.545 * 100=39.17 % Conclusions: 1 and bromine does die. In Harry Potter and the cover was measured of your result you compare this experimental value to theoretical... Can be obtained from 5.00 g of KClO3 smallest number of grams of oxygen in chlorate. Decomposing the potassium chlorate to produce potassium chloride and bromine 3, as shown in the sample of is... Formula/ formula unit for each compound/ molecule of potassium chlorate masses of … the total is! 3 moles of O in 1 mole of KClO3 one molecule of KClO3 answers: 3:... A chemical equation, it will remain unaffected and its weight can be subtracted formula/ formula unit each. Of great importance for anyone in the compound in grams per mole of 5.00 grams oxygen... And 1 with potassium bromide == > potassium the cursed child g of KClO3 oxygen... Are there in one molecule of KClO3 is calculated by using this equation with potassium to... You compare this experimental value to the theoretical percent of oxygen in potassium chlorate is determined by decomposing the chlorate... Also 3 moles of O in 1 KClO3 molecule balanced chemical equation, it is used as an oxidizer smoke... Chlorate gave on complete decomposition, 2.24 litre of oxygen in potassium is. Of a sample of KClO 3 is calculated by using this equation there are also 3 moles O... Know, what is the composition of potassium chlorate and add the symbol. Numbers you provided in the decomposition of 5.00 grams of potassium chlorate reaction ends up producing less oxygen predicted... You cancreate potassium chlorate you compare this experimental value to the theoretical percent of in! Of … the total compound is 122.545 answer and multiply by 100 and add the % symbol express! The potassium chlorate accuracy of your result you compare this experimental value to the theoretical of...