Question

Write balanced equations for the following reactions

1. Reaction between sodium and excess oxygen
2. Reaction between Nitric Acid and Copper Carbonate 
3. Reaction between Zinc and hydrochloric acid
4. Heated Silver nitrate reaction

Answer 1

1. 2Na(s) + O₂(g) → Na₂O₂(g)
2. 2HNO₃(aq) + CuCO₃(s) → CuNO₃(aq) +CO₂(g) + H₂O(l)
3. Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g)
4. 2AgNO₃(s)   2Ag(s) + 2NO₂(g) + O₂(g)