Q1. What are the products in a reaction where an acid reacts with a base?
- (a) Acid and water
- (b) Base and water
- (c) Salt and water
- (d) Gas and water
Answer & solution
Answer: (c) Salt and water
When an acid reacts with a base, the reaction is called a neutralisation reaction. The products formed are salt and water.
Acid + Base → Salt + Water
Example: HCl + NaOH → NaCl + H2O (Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water)
Option 1 (Acid and water) is incorrect - acid is consumed in the reaction, not produced.
Option 2 (Base and water) is incorrect - the candidate chose this wrong option; base is consumed, not produced.
Option 4 (Gas and water) is incorrect - some reactions produce gas, but the general rule for acid-base neutralisation is salt and water.