jika diketahui ka CH3 COOH = 10^-5, maka pH larutan Ca(CH3 COOH)2 0,8 M. (log 2 = 0,3)

dik: M= 0.8 = 8x10'-5
1
ka= 10'-5
dit: pH..?
jawab:
[H+]= √ka. M
= √10'-5x8x10'1
= √8x10'-6
= 8'1/2x10'-3

pH= -log [H+]
= -log 8'1/2x10'-3
= 3 -log 8'1/2
= 3-1/2 log 8
= 2,5x0,9
= 12,5

Ca(CH3COOH)2 itu garam ya jadi pakainya rumus hidrolisis