Equilibrium Question 524

Question: 50 $ ml $ of $ 2,N $ acetic acid mixed with $ 10,ml $ of $ 1N $ sodium acetate solution will have an approximate $ pH $ of [MP PMT/PET 1988]

Options:

A) 4

B) 5

C) 6

D) 7

Show Answer

Answer:

Correct Answer: A

Solution:

$ pH=pK_{a}+log\frac{[\text{ Salt }]}{[\text{ Acid }]} $

$ =-\log 2\times {10^{-5}}+\log \frac{10\times 1}{50\times 2}=4 $ .



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