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= 0,1×0,02
= 0,002
nH2SO4 = M×V
= 0,1 × 0,01
= 0,001
reaksinya :
2NH4OH + H2SO4 ---> (NH4)2SO4 + H20
m: 0,002 0,001 - -
b: 0,002 0,001 0,001 0,001
s: - - 0,001 0,001
[OH^-] = akar Kw/Ka × M
= akar 10^-14/10^-5 × 10^-3
= akar 10^-9 × 10^-3
= akar 10^-27
= 10^-13,5
POH = 13,5
pH = 0,5