Q8 / 150 · MHT CET 2026 (17 April Shift 1) · Chemistry
Which from following salts does not undergo hydrolysis ?
- AAmmonium nitrate
- BSodium acetate
- CAmmonium cyanide
- Correct answerDSodium nitrate
Solution
Salts of strong acids and strong bases do not undergo hydrolysis because their constituent ions do not react with water to produce $H^+$ or $OH^-$ ions.
Ammonium nitrate is a salt of a weak base ($NH_4OH$) and a strong acid ($HNO_3$), so it undergoes cationic hydrolysis.
Sodium acetate is a salt of a strong base ($NaOH$) and a weak acid ($CH_3COOH$), so it undergoes anionic hydrolysis.
Ammonium cyanide is a salt of a weak base ($NH_4OH$) and a weak acid ($HCN$), so it undergoes both cationic and anionic hydrolysis.
Sodium nitrate is a salt of a strong base ($NaOH$) and a strong acid ($HNO_3$). Therefore, it does not undergo hydrolysis.
Ammonium nitrate is a salt of a weak base ($NH_4OH$) and a strong acid ($HNO_3$), so it undergoes cationic hydrolysis.
Sodium acetate is a salt of a strong base ($NaOH$) and a weak acid ($CH_3COOH$), so it undergoes anionic hydrolysis.
Ammonium cyanide is a salt of a weak base ($NH_4OH$) and a weak acid ($HCN$), so it undergoes both cationic and anionic hydrolysis.
Sodium nitrate is a salt of a strong base ($NaOH$) and a strong acid ($HNO_3$). Therefore, it does not undergo hydrolysis.
Hence, the correct answer is option: 'D'.