Chapter 8, Problem 146CWP

Interpretation Introduction

Interpretation: From the given data, molar mass of the gas should be determined

Concept introduction:

Ideal gas equation in terms of Density,

$\text{Density}\text{=}\frac{\text{Pressure}\text{×}\text{Molecular mass}}{\text{R}\text{×}\text{Temperature}}$

By rearranging the equation,

$\begin{array}{l}\text{Molecular mass}\text{=}\frac{\text{Density}\text{×}\text{R}\text{×}\text{Temperature}}{\text{Pressure}}\\ \\ \text{Since,Density}\text{=}\frac{\text{Mass}}{\text{Volume}}\\ Molecularmass=\frac{Mass}{Volume}\times \frac{R\times Temperature}{Pressure}\end{array}$

$\text{R}\text{=}\frac{\text{0}\text{.08206L}\text{atm}}{\text{K}\text{mol}}$ ( Universal gas constant)