Chapter 21, Problem 40PS

Interpretation Introduction

Interpretation:

To and predict the volume of ${\text{H}}_{\text{2}}$ gas produced at the given temperature and pressure.

Concept introduction:

Aluminium belongs to group $\text{3A}$ of the periodic table. It react with a base like calcium hydroxide and water to produce aerated concrete bricks and hydrogen gas. The aerated concrete brick formed has the chemical formula of $\text{CaO}\cdot {\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}\cdot {\text{6H}}_{\text{2}}\text{O}$.

The balanced chemical equation is,

    $2\text{Al}\left(\text{s}\right)+\text{3Ca}{\left(\text{OH}\right)}_{\text{2}}\left(\text{s}\right)+6{\text{H}}_{\text{2}}\text{O}\left(\text{l}\right)\to 3\text{CaO}\cdot {\text{Al}}_{\text{2}}{\text{O}}_{\text{3}}\cdot {\text{6H}}_{\text{2}}\text{O}\left(\text{s}\right)+3{\text{H}}_{\text{2}}\left(\text{g}\right)$

Ideal gas equation is,

$PV=nRT$

Where P, V, T, n, and R are the pressure, volume, temperature and amount of substance respectively.