Jawabanmu

2014-02-17T15:18:25+07:00
PH = 10
pOH = 14- 10 = 4
[OH-] = 10^-4


[OH-] = kb x perbandingan basa dgn garam
10^-4 = 1.8 x10^-5 x perbandingan basa dgn garam
perbandingan basa dgn garam = 5
mol NH4OH / NH4Cl  = 5