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What is the pH at the equivalence point ...

What is the pH at the equivalence point in a titration of `0.2 M NH_(3) (aq)` with `0.02 M HBr` (aq). For the ammonia `K_(b) = 1.8 xx 10^(-5)`

A

`5.48`

B

`5.6`

C

`7.0`

D

`8.5`

Text Solution

Verified by Experts

The correct Answer is:
B
pH `= 7 - (1)/(2)pKb - 1/2 "log"C`
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