Chemistry
Sodium hydroxide can react with …………… acid to form an acid salt.
- Nitric acid
- Hydrochloric acid
- Acetic acid
- Sulphuric acid
Acids Bases Salts
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Answer
Sulphuric acid
Reason — An acid salt is formed when a dibasic or tribasic acid is only partially neutralised by a base.
- Nitric acid (HNO3) and hydrochloric acid (HCl) are monobasic acids → they can form only normal salts, not acid salts.
- Acetic acid (CH3COOH) is also monobasic → only forms sodium acetate.
- Sulphuric acid (H2SO4) is dibasic → with sodium hydroxide (NaOH), it can form an acid salt, sodium hydrogen sulphate (NaHSO₄), on partial neutralisation.
So, sodium hydroxide reacts with sulphuric acid to form an acid salt.
NaOH + H2SO4 ⟶ NaHSO4 + H2O
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