Question

_____KClO3 → ____KCl + _____O2

How many moles of oxygen are produced by the decomposition of 4.2 moles of potassium chlorate, KClO3?

Answer 1

Step-by-step explanation:

2KClO3 → 2KCl + 3O2

2 mol KClO3 / 3 mol O2 = 4.2 mol KClO3 / x mol O2

x = (3 mol O2)(4.2 mol KClO3) / (2 mol KClO3) = 6.3 mol O2

6.3 moles of oxygen are produced by the decomposition of 4.2 moles of potassium chlorate.