Chapter 11, Problem 7STP

Interpretation Introduction

Interpretation: The expected products by the decomposition of potassium oxide is to be stated.

Concept Introduction : According to the law of conservation of mass, the mass can neither be created nor be destroyed. Every reaction must be balanced.

Answer to Problem 7STP

The expected products are solid potassium and oxygen gas.

Explanation of Solution

When the potassium oxide is heated, it decomposes into solid potassium and oxygen gas. The decomposition of potassium oxide is given as:

  ${\text{K}}_{\text{2}}\text{O}\left(s\right)\to \text{K}\left(s\right)+{\text{O}}_{\text{2}}\left(g\right)$

Hence, the correct option is (D).