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When potassium perchlorate decomposes, potassium chloride and oxygen are formed.

(a) What is the balanced chemical equation of the decomposition?

(b) In this decomposition, the actual yield is 83.2%. If 198.6g of oxygen is produced, how much potassium chlorate decomposed?

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Christian Tuso
Christian TusoLv10
30 Nov 2020

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Related questions

please write clear

Potassium chlorate (KClO3 molar mass 122.5 g/mol) decomposes into oxygen gas and potassium chloride. When 3.25 grams of potassium chlorate decomposes at 610 torr and 34*C, what is the volume of oxygen gas produced? Remember to convert torr to atm and Celcius to Kelvin. 2 KClO3 --> 3 O2(g) + 2 KCl (s).

In an experiment the stoichiometry of potassium chlorate will beinvestigated to use the results to analyze a potassiumchlorate-potassium chloride mixture. Potassium chlorate is acompound containing the elements potassium, chlorine, and oxygen.When heated strongly, the compound decomposes and all oxygen can bedriven off. The potassium and chlorine remain as the productpotassium chloride, for which the formula is KCl. When a mixture ofpotassium chlorate and potassium chloride is heated, the mass lossdue to oxygen evolved from the potassium chlorate enables you tocalculate how much potassium chlorate was present in the originalmixture. To speed the rate at which the decomposition occurs,manganese dioxide is used as a catalyst. The mass of the manganesedioxide remains constant.

After the second part of this experiment is done (part B), if youfound the following data:
-the mass of test tube plus the catalyst
-the mass of test tube and catalyst plus the unknown mixture
-the mass of test tube and catalyst plus residue
-the mass of the unknown mixture
-the mass of oxygen lost
-the number of moles of oxygen atoms evolved
-the number of moles of potassium chlorate decomposed

how would you find from this data:
-the mass of potassium chlorate in the original sample

IF YOU ANSWER THIS QUESTION PLEASE LOOK AT NEXT ONES, THEY ARECONTINUATIONS (didn't want to have more than one question in oneask). If you are just seeing this one, look at the previous onestoo!

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