Chapter 19.5, Problem 46LC

Interpretation Introduction

Interpretation : The type of salt produces an acidic solution and basic solution to be reviewed.

Concept Introduction : One of the products of a neutralization reaction is salt. Salt constitutes a cation from a base and an anion from an acid. They are neutral in solution form.

Answer to Problem 46LC

Acidic solutions are formed by the reaction of a weak base with strong acid.

The basic solution is formed by the reaction of a strong base with weak acid.

Explanation of Solution

Acidic solutions are produced by salts that have positive ions which give hydrogen ions to water.

A strong acid and a weak base give rise to acidic solutions.

For example, Ammonium chloride is a salt formed between a strong acid hydrochloric acid, and a weak base ammonia. Since it is acidic, it is ionized completely in water.

  ${\text{NH}}_{\text{4}}\text{Cl}\left(aq\right)\to {\text{NH}}_4^{+}\left(aq\right)+{\text{Cl}}^{-}\left(aq\right)$

Basic solutions are produced by salts that have negative ions which draw hydrogen ions from water.

A weak acid and a strong base give rise to basic solutions.

For example, Sodium ethanoate is a salt formed between a weak acid methanoic acid, and a strong base sodium hydroxide. Since it is basic, it is ionized completely in water.

  ${\text{CH}}_{\text{3}}\text{COONa}\left(aq\right)\to {\text{CH}}_{\text{3}}{\text{COO}}^{-}\left(aq\right)+{\text{Na}}^{+}\left(aq\right)$