Question

Balance the following chemical equations :

(a) FeS + HCl → FeCl2 + H2S

(b) Na2CO3 + HCl → NaCI + H2O + CO2

(c) H2 + O2 → H2O

(d) Na2O + H2O → NaOH

Answer 1

(a) FeS + 2HCl → FeCl2 + H2S

(b) Na2CO3 + 2HCl → 2NaCI + H2O + CO2

(c) 2H2 + O2 → 2H2O

(d) Na2O + H2O → 2NaOH