pH of solution made by mixing 50mL of 0....

`pH` of solution made by mixing `50mL` of `0.2M NH_(4)CI` and `75mL` of `0.1M NaOH is[pK_(b) of `NH_(3)(aq) = 4.74. log 3 = 0.47]`

A

7.02

B

13

C

7.32

D

9.73

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The correct Answer is:

D

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