H2SO4+2KOH=K2SO3+2H2O
m H2SO3=20*0.50=10 г
N H2SO3=10/82=0.12моль
n KOH =0.12*2=0.24
390244 моль
M KOH =0.24*56=1,37
H2SO4+2KOH=K2SO3+2H2O
m H2SO3=20*0.50=10 г
N H2SO3=10/82=0.12моль
n KOH =0.12*2=0.24
390244 моль
M KOH =0.24*56=1,37