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 $ .
