erwrite the formulae and balance the following :
1) ammonium chloride + calcium hydoxide ----->calcium chloride + ammonium + water
2) zinc oxide + nitric acid -----> zinc nitrate + water
3) lead dioxide + hydrochloric acid -----> lead chloride + water + chlorine
4) iron + conc. sulphuric acid -----> iron(ii) sulphate + sulphur dioxide gas + water
5) calcium + water -----> calcium hydroxide + hydrogen
6) red lead -----> lead monoxide + oxygen
7) zinc + dil. sulphuric acid -----> zinc sulphate+ hydrogen
8) aluminium oxide + sulphuric acid -----> aluminium sulphate + water
9) ferrous sulphate + sodium hydoxide-----> ferrous hydroxide + sodium sulphate
10) calcium carbonate + hydrochloric acid -----> calcium chloride + water + carbon dioxide
1. 2 NH4Cl + Ca(OH)2 → CaCl2 + 2 NH3 + 2 H2O
2. ZnO + 2 HNO3 → Zn (NO3)2 + H2O
3. PbO + 2 HCl → PbCl + H2O + Cl
4. 2 Fe + 6 H2SO4 → Fe2(SO4)3 + 2 SO2 + 6 H2O
5. Ca + 2 H2O → Ca(OH)2 + H2
6. 2 Pb3O4 → 6 PbO + O2
7. Zn + H2SO4 → ZnSO4 + H2
8. Al2O3 + 3 H2SO4 → Al2(SO4)3 + 3 H2O
9. FeSO4 + 2 NaOH → Fe(OH)2 + Na2SO4
10. CaCO3 + 2 HCl → CaCl2 + H2O + CO2