Write and balance the following equations presented to you as written statements:
(i) Magnesium carbonate plus hydrochloric acid produces magnesium chloride plus water plus carbon dioxide gas.
(ii) Aluminium plus chlorine gas produces aluminium trichloride.
(iii) Nitrogen plus hydrogen produces ammonia.
(iv) Calcium plus sulphur produces calcium sulphide.
(v) Magnesium burns in CO2 to form magnesium oxide and carbon.
Following reaction can be balance in step by step method:
(i)
MgCO3 + HCl → MgCl2 + H2O + CO2
MgCO3 + 2HCl → MgCl2 + H2O + CO2
(ii)
Al + Cl2 → AlCl3
Al + 3Cl2 → 2AlCl3
2Al + 3Cl2→ 2AlCl3
(iii)
N2 + H2 → NH3
N2 + H2 → 2NH3
N2 + 3H2 → 2NH3
(iv) Ca + S → CaS
(v)
Mg + CO2 → MgO + C
Mg + CO2 → 2MgO + C
2Mg + CO2 → 2MgO + C.
