50 ml o 0.1 M sodium acetate, 25 ml of 0.2 M acetic acid were added together to form the buffer solution. `pK_(a)` of `CH_(3)COOH` is 4.8. Find the pH of the solution.

Explanation

For acidic buffer
`pH=pK_(a)+"log"(["Salt"])/(["Acid"])`
[Salt] `=` Volume of Salt `xx` Moles of Salt `=M_(1)V_(1)`
[Acid] `=` Volume of acid `xx` Moles of acid `=M_(2)V_(2)`
`pH=4.8+"log"(50xx0.1)/(25xx0.2)`
`:.pH=4.8`