Jawabanmu

2014-04-24T09:44:13+07:00
Saya kasih contoh lain ya sob, semoga membantu :)

Soal :

Terdapat 100 ml larutan (CH3COO)2Ba 0,1 M. Jika Ka CH3COOH = 2 x 10-5, tentukanlah pH larutan garam tersebut !

Penyelesaian :
Garam bersifat basa kuat

[ OH- ] = ?Kh x 2 x g = ?Kw x 2 x [ g ]
Ka

[ OH- ] = ? 10-16 x 2 x [ 0,1 ] = ? 10-10 = 10-5
2x10-5
pOH = - log [ OH- ] = - log 10-5
pH = pKw – pOH = 14 – 5 = 9

pH = 9
2014-04-24T09:51:17+07:00
Hctkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk