Question

what will be the ph of an aqueous solution of 1.0 m ammonium formate assuming completely dissociation (pka for formic acid = 3.8 and pka for ammonia

Answer 1

wallt of weak acid and weak base

ph=1/2pkw + 1/2pka -1/2pkb

=1/2×14 + 1/2×3.8 -1/2×4.8

=6.5

Answer 2

what will be the ph of an aqueous solution of 1.0 m ammonium formate assuming completely dissociation (pka for formic acid = 3.8 and pka for ammonia.

Your answer - wallt of weak acid and weak base

wallt of weak acid and weak baseph=1/2pkw + 1/2pka -1/2pkb

wallt of weak acid and weak baseph=1/2pkw + 1/2pka -1/2pkb=1/2×14 + 1/2×3.8 -1/2×4.8

wallt of weak acid and weak baseph=1/2pkw + 1/2pka -1/2pkb=1/2×14 + 1/2×3.8 -1/2×4.8=6.5

Hope it helps!!