What volume of oxygen is produced from the decomposition of 2 moles of KCIO3 at s.t.p? [Molar volume of a gas at s.t.p = 22.4 dm³]

A. 22.4 dm³
B. 33.6 dm³
C. 44.8 dm³
D. 67.2 dm³

Correct Answer:

Option D – 67.2 dm³

Explanation

2KClO3 → 2KCl + 3O2
3 moles of oxygen is produced
1 moles of oxygen is 22.4 dm³
3 moles of oxygen is 67.2 dm³