Chapter 15, Problem 5RQ

Interpretation Introduction

Interpretation:

The substances that can form hydrogen gas on reaction with acids should be identified.

Concept Introduction:

Reaction with acids may include several variations such as neutralization. Neutralization reaction involves concentration of an acid and base that generates a salt from the cation and anion substrates along with removal of water. For instance reaction among $\text{NaOH}$ and $\text{HCl}$ is as follows:

  $\text{NaOH}+\text{HCl}\to \text{NaCl}+{\text{H}}_2\text{O}$

Thus reaction between basic carbonate and acid to form salt and water is neutralization. Similarly, with alkaline hydrogen carbonates and acids salt and carbon dioxide is released.

Metal hydroxide treatment with acids such as $\text{HCl}$, sulfuric acid or nitric acid from corresponding salts by neutralization along with release of water.

Release of hydrogen gas can be used to detect and identify nature of reactant.