Jawabanmu

2014-02-20T04:18:14+07:00
PH = 3
[H+]= 1 x10^-3
[H+]= akar ka x M  ch3cooh
[h+]^2= ka x M ch3cooh
(1 x 10^-3)^2= 10^-5 x M ch3cooh
M ch3cooh = 0,1 M

M= n /v
n= M x v
  =0,1 x 2 = 0,2 mol

n= m/mr
m=mr x n = 60 x 0,2 = 12 gram


Bleh ku komen dikit ya....
PH = 3
[H+]= 1 x10^-3
[H+]= akar ka x M  ch3cooh
[h+]^2= ka x M ch3cooh
(1 x 10^-3)^2= 10^-5 x M ch3cooh
M ch3cooh = 0,1 M disini benar.....tapi rumus gram=M.mr.1000/v
tapi karena v=2 liter kita bisa pakai rumus M=n/v