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10 mL of 0.1 M tribasic acid H(3)A is ti...

10 mL of 0.1 M tribasic acid `H_(3)A` is titrated with 0.1 M NaOH solution. What is the ratio of `([H_(3)A])/([A^(3-)])` at `2^(nd)` equivalence point ?
Given `K_(1)=7.5xx10^(-4), K_(2)=10^(-8), K_(3)=10^(-12)`.

A

`~10^(-4)`

B

`~10^(+4)`

C

`~10^(-7)`

D

`~10^(+6)`

Text Solution

Verified by Experts

The correct Answer is:
c
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