0.1 mol/L的H2SO4溶液的PH值
c(H+)=0.2mol/L pH=-lgc(H+)=0.7
0.1 mol/L HCL 10ml与0.1mol/L NaOH 12ml混合
c(OH-)=(12-10)*0.1/(12+10)=0.018mol/L
pOH=2 pH=12