How many grams of potassium chlorate decompose to potassium chloride?

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04-04-2017
Chemistry

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How many grams of potassium chlorate decompose to potassium chloride?

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error2 error2 · Answer 1 · 2017-04-04T07:46:42+02:00

error2 error2

04-04-2017

n = pV / RT = 0.914 x 0.565 L / 0.08206 x 401 K =0.0157 mol
the ratio between KClO3 and O2 is 2 : 3

moles KClO3 =0.0157 x 2 / 3 = 0.0105 mol

Mass KClO3 = 0.0105 mol x 122.553 g/mol =1.29 g

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taylorr232 taylorr232 · Answer 2 · 2017-04-04T07:48:35+02:00

taylorr232 taylorr232

04-04-2017

You have to find out how many moles of O2 you have at the pressure and temperature. Use PV=nRT then calculate grams from moles of KC103

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