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18 ml of mixture of acetic acid and sodi...

18 ml of mixture of acetic acid and sodium acetate required 6 ml of 0.1 M NaOH For Neutrilisation of the acid and 12 ml of 0.1 M HCl for reaction with salt Seperately . If `Pk_a` of the acid is 4.75 What is the pH pf the mixture.

A

5.05

B

4.75

C

4.5

D

4.6

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A
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