Chapter 9, Problem 138QP

Interpretation Introduction

Interpretation:

The volume of the oxygen gas formed by decomposition of potassium chlorate is to be determined.

Concept Introduction:

The number of moles of a gas $\left(n\right)$ is equal to the ratio of the amount of gas $\left(m\right)$ present in the container to the molar mass $\left(M\right)$ of that gas.

$n=\frac{m}{M}$ …(1)

The ideal gas law dictates the behavior of all ideal gases. It states that the pressure $\left(P\right)$ and volume $\left(V\right)$ of a gas is directly proportional to the number of moles $\left(n\right)$ present in the gas and the temperature $\left(T\right)$ of the gas.

$PV=nRT$ …(2)