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Assertion : The pH of an aqueous solutio...

Assertion : The pH of an aqueous solution of acetic acid remains unchanged on addition of sodium acetate.
Reason : The ionization of acetic acid is increased by addition of sodium acetate.

A

If both (A) and (R) are correc, and (R) is the correct explanation of (A).

B

If both (A) and (R) are correct but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If (A) is incorrect, but (R) is correct.

Text Solution

Verified by Experts

The correct Answer is:
D
`(A)` is wrong. It forms acidic buffer and this `pH` changes. `(R)` is correct. Due to common ion `(CH_(3)COO^(Theta))`, ionisation of `CH_(3)COOH` is supressed.
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