3 Using the balanced equation
2 KCIO3 2 KCl + 302
If 9.6 moles of O2 are produced, how many moles of KCIO3 are decomposed?
6

6.4 moles of  KClO₃ are decomposed

Explanation:

Given data:

Number of moles of O₂ produced = 9.6 mol

Number of moles of KClO₃ decomposed = ?

Solution:

Chemical equation:

2KClO₃       →     2KCl + 3O₂

now we will compare the moles of oxygen and KClO₃.

                 O₂           :           KClO₃

                   3           :               2

                9.6           :           2/3×9.6 = 6.4 mol

Thus, 6.4 moles of  KClO₃ are decomposed.