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3 g of acetic acid is added to 250 mL of...

3 g of acetic acid is added to 250 mL of 0.1 M HCl and the solution made up to 500 mL. To 20 mL of this solution `(1)/(2)` mL of 5 M NaOH is added . The pH of the solution is __________.
[Given : pKa a acetic acid = 4.75, molar mass of acetic acid = 60 g/mol, log 3 = 0.4771]
Neglect any changes in volume.

A

2.61

B

4.52

C

5.22

D

8.78

Text Solution

Verified by Experts

The correct Answer is:
C
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