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How many moles of oxygen are produced when 2 mol of potassium chlorate (KClO3) decompose? 1 2 3 6

Kevin Sutter

in Chemistry

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Rodney Fox on January 31, 2018

The answer is 3. The number that appears in front of an element or compound in a chemical reaction, generally indicates the number of moles of that compound or element. Therefore, two moles of chlorate of potassium is; 2KClO3 This means that there are 6 atoms of oxygen ( Note: you multiply by the Avogadro's number 6.022 * 10^23). 6 atoms of oxygen to form 3 molecules of oxygen, because an oxygen molecule is two (2) oxygen atoms (O2). The following balanced equation indicates this;2KClO3 - 2KCl + 3O2


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