Question

Which of the following is a neutralisation reaction?

• A. $NaOH+HCl\to NaCl+H_{2}O$
• B. $KOH+HNO\to KNO+H_{2}O$
• C. $NaOH+H_{2}O\to NaO+O_2$
• D. $KOH+NaCl\to KCl+NaOH$

Answer 1

The correct option is A

$NaOH+HCl\to NaCl+H_{2}O$

We know when an acid reacts with a base it forms salt and water. This is called a neutralisation reaction.

Example: $NaOH+HCl\to NaCl+H_{2}O$

In the other reactions like $KOH+HNO\to KNO+H_{2}O$, there is no compound as such HNO.

In $NaOH+H_{2}O\to NaO+O_2$, this is a reaction between a base and water, hence, not a neutralisation reaction.

In $KOH+NaCl\to KCl+NaOH$, this is a reaction between a base and salt, hence, not a neutralisation reaction.