0.1 M formic acid solution is titrated a...

0.1 M formic acid solution is titrated against 0.1 M NaOH solution. What would be the difference in pH between 1/5 and 4/5 stages of neutralization of acid?

A

2 log 3/4

B

2 log 1/5

C

log 1/3

D

2 log 4

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