Question

A certain weak base has a Kb of 7.00 x 10-7. What concentration of this base will produce a pH of 10.08? concentration: M

Answer 1

Ansuler. pH = 10.08, e. pH t pos=14, porta 14-10.00 poh = 3.92 . por = -log [ou] , [on] = Antilog [-por] [01-J z Antilog [-3.92] [OH-] 1.2 x 104 For weak base - BOH Bt tour I 2 0 0 By ty ty e x-y ty ty Y = lgx lot IT od) Kb 2x2 x- } = x=(1.2x10472 700x767 7 + 12x104 x = 1.2x12x108 760 x 15 +0.00012 x= 0.02057 x = 0.021M concentration = 0.021M please rate its