Chapter 11, Problem 112E

Interpretation Introduction

Interpretation:

The equation for the gas evolution reaction is to be written and the amount of potassium sulfide reacted is to be determined.

Concept introduction:

The relationship between moles of gas and mass of gas is:

$\text{Moles}\left(n\right)=\frac{\text{Mass}\left(m\right)}{\text{Molar mass}}$

The equation of ideal gas law is written as:

$PV=nRT$

Here, $P$ is the pressure of gas, $V$ is the volume of gas, $R$ is the gas constant, $T$ is the temperature and $n$ is the number of moles of gas.