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20 mL of 0.1 M H(2)SO(4) solution is add...

20 mL of `0.1 M H_(2)SO_(4)` solution is added to 30mL of `0.2 M NH_(4)OH` solution. The pH of the resultant mixture is :`[pK_(b) of NH_(4)OH=4.7]`

A

5.2

B

9

C

5

D

9.4

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