J.R. S. answered 03/08/21
Ph.D. University Professor with 10+ years Tutoring Experience
The weak base is ClO2-
The strong acid is H2SO4
The strong acid will donate H+
The weak base will accept H+
ClO2- + H2SO4 ==> HClO2 + HSO4-
If you want to include the second dissociation of H2SO4, then you'd have...
2ClO2- + H2SO4 ==> 2HClO2 + SO42- (without Na+ as the spectator ion)
Complete molecular equation:
2NaClO2 + H2SO4 ==> 2HClO2 + Na2SO4