Question

CuSO4溶液中通入过量H2S后,pH?

Answer 1

CuSO4＋H2S＝CuS↓+H2SO4

1-------------------------------1

0.1---------------------------X

X=0.1mol/L

c(H+)=0.1*2=0.2mol/L

PH=1-lg2