1.

Determine the `pH` of an acidic buffer solution `(HA+NaA)` having acid and salt concentration respectively `0.1M` and `0.2M`. (Given `pK_(a) = 4.7, log 2= 0.30, log 5=0.70)`A. `4`B. `5`C. `3`D. None of these

Answer» Correct Answer - B
Determine the `pH` ……
`pH = 4.7+"log"(0.2)/(0.1)=5`


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