Aqueous solution of sodium acetate is:
A. Neutral
B. Polar
C. Strongly acidic
D. Alkaline
MP Assistant Professor Exam 2022
Correct Option: D (Alkaline)
Aqueous solution of sodium acetate is alkaline (basic) because it is a salt formed from a strong base (NaOH) and a weak acid (CH3COOH).
CH3COONa(aq) + H2O(l) ⇌ CH3COOH(aq) + NaOH(aq) Explanation: When sodium acetate dissolves in water, it dissociates completely. The acetate ions (CH3COO−) undergo anionic hydrolysis:
CH3COO− + H2O ⇌ CH3COOH + OH−
The generation of excess hydroxide ions (OH−) increases the pH above 7, making the solution alkaline and capable of turning red litmus paper blue.
Aqueous solution of sodium acetate is alkaline (basic) because it is a salt formed from a strong base (NaOH) and a weak acid (CH3COOH).
CH3COONa(aq) + H2O(l) ⇌ CH3COOH(aq) + NaOH(aq) Explanation: When sodium acetate dissolves in water, it dissociates completely. The acetate ions (CH3COO−) undergo anionic hydrolysis:
CH3COO− + H2O ⇌ CH3COOH + OH−
The generation of excess hydroxide ions (OH−) increases the pH above 7, making the solution alkaline and capable of turning red litmus paper blue.