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if equal volume of O.1 M NH4OH and 0.1 M...

if equal volume of O.1 M `NH_4OH` and 0.1 M HCl are mixed, then the pH of resulting mixture will be
`[Given` `pK_b (NH_4 OH)= 4.75, log 5=0.7)]`

A

8.72

B

6.28

C

7.28

D

5.28

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