Calculate the pH of an aqueous solution of `1.0M` ammonium formate assuming complete dissociation. `(pK_(a)` of formic acid `= 3.8 and pK_(b)` of ammonia `= 4.8`)

Explanation

For salts of weak acid and weak base.
`pH = 7 + 1/2(pK_(a) - pK_(b)) = 7 + 1/2(3.8-4.8) = 6.50`