Balance the following chemical equations:
(i) NaOH + H2SO4 → Na2SO4 + H2O
(ii) HNO3 + Ca(OH)2 → Ca(N03)2 + H2 O
(iii) FeCl2 + H2S → HCl + FeS
These equation can be balance in steps.
(i)
a)2NaOH + H2SO4 → Na2SO4 + H2O
b)2NaOH + H2SO4 → Na2SO4 + 2H2O
(ii)
a)2HN03 + Ca(OH)2 → Ca(NO3)2 + H2O
b)2HNO3 + Ca(OH)2 → Ca(NO3)2 + 2H2O
(iii) FeCl2 + H2S → 2HCl + FeS.
