Question

标准情况下 67.2升so2通入400ml NaOH溶液中 蒸干溶液得固体356克 求NaOH溶液物

Answer 1

2NaOH+SO2=Na2SO3+H2O

2a a a

NaOH+SO2=NaHSO3

b b b

n(SO2)=a+b=67.2/22.4=3

m=126a+104b=356

得a=2,b=1

n(NaOH)=2a+b=5mol