Chapter 21, Problem 74GQ

Interpretation Introduction

Interpretation:

To calculate the volume required for $1\text{kg}$ of ${\text{H}}_{\text{2}}$ is to be stored at $25{}^{\circ }\text{C}$ and $1\text{atm}$ pressure.

Concept introduction:

The combustion reaction of gasoline is written as,

    $2{\text{C}}_{\text{8}}{\text{H}}_{\text{18}}+12.5{\text{O}}_{\text{2}}\to 16{\text{CO}}_2+18{\text{H}}_{\text{2}}\text{O}$

The hydrogen fuel cell reaction is written as

    $2{\text{H}}_2+{\text{O}}_2\to 2{\text{H}}_{\text{2}}\text{O}$

The volume of gas is directly proportional to the mass of the gas.

$Volume=\frac{Mass}{Density}$