Jawabanmu

2014-03-01T00:11:28+07:00
PH = 5
[H+] = 10^-5

[H+] = √ (Kw/Kb [(NH4)2SO4] )

[H+] = √ (Kw/Kb 2 (g/Mr)/V )

10^-5 = √ ( (10^-14/10^-5) 2 x (g/132)/0,1 )

g = 0,66 gram

massa (NH4)2SO4 = 0,66 gram
Makasi....tp mau nanya yang 2 (g/Mr)/V itu, 2 nya itu emg rumusny ya??