Question

How many grams of KCl are produced if 90 g KCIO3 decomposes? *

54.75 g KCI
13.69 g KCI
27.37 g KCI
37 g KCI

Answer 1

The chemical equation for the decomposition reaction of KClO₃ is the following one:

2KClO₃ → 2KCl + 3O₂

For determining the moles of KCl produced from 89,0 g of KClO₃ we are going to use the following conversion factor to go from grams of KClO₃ to moles of KCl:



So, 0,726 moles of KCl are produced.