Question

A buffer solution contains 0.1 M of acetic acid and 0.1 M of sodium acetate. What will be its pH, it `pK_(a)` of acetic acid is 4.75
A. `4.00`
B. 4.75
C. `5.00`
D. 5.25

Answer 1

Correct Answer - B
`pH = pK_(a) + log.(["Salt"])/(["Acid"]), pH = 4.75 + log.(0.1)/(0.1)`
`pH = 4.75 + log 1, pH = 4.75`.