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A 75 mL solution that is 0.10 M in HC2H3...

A 75 mL solution that is 0.10 M in `HC_2H_3O_2` and 0.10 M in `NaC_2H_3O_2` has a pH of 4.74.Which of the following actions will change the pH of this solution ?
(P)Adding 15 mL of 0.10 M HCl
(Q)Adding 0.010 mol of `NaC_2H_3O_2`
(R)Diluting the solution from 75 mL to 125 mL

A

P only

B

Q only

C

P and Q only

D

P,Q and R

Text Solution

Verified by Experts

The correct Answer is:
c
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