Question

The chemical reaction $HN{O}_3+KOH\to KN{O}_3+H_{2}O$ is an example of

• A. neutralization
• B. double displacement
• C. neutralization and double displacement
• D. combination

Answer 1

The correct option is C

neutralization and double displacement

Double displacement reactions

Reaction between two ionic compounds in which the ions are exchanged between the metal ions is called a double displacement reaction. In these reactions, both the ions are displaced from its solution. Neutralization and precipitation reactions occur by double displacement. Neutralization reactions occur between acids and bases forming salt and water.

In the given reaction, Nitric acid (HNO₃) reacts with Potassium hydroxide (KOH) to form Potassium nitrate (KNO₃) and Water (H₂O). Therefore, it is a neutralization reaction. The chemical equation for the reaction is:

$HN{O}_3\left(aq\right)+KOH\left(aq\right)\to KN{O}_3\left(aq\right)+H_{2}O\left(l\right)$

(Nitric acid) (Potassium (Potassium (Water)

hydroxide) nitrate)

The nitrate ions and hydroxide ions are exchanged between the metals in the reaction. Therefore, neutralization occurs by double displacement.

Since the reaction is both neutralization and double displacement, option (C) is correct. Options (A) and (B) are incorrect.

In combination reactions, a single product is formed. The above reaction has more than one product. Therefore, option (D) is wrong.

The correct option is (C) neutralization and double displacement.