Classify the following reactions as combination, decomposition, displacement, precipitation and neutralization. Also balance the equations.
(a) CaCO3(s) + heat → CaO(s) + CO2(g)
(b) Zn(s) + H2SO4 → ZnSO4(s) + H2(g)
(c) AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3
(d) NH3(g) + HCl(g) → NH4Cl(s)
(e) CuSO4(aq) + H2S(g) →CuS(s) + H2SO4(l)
(f) Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)
(g) Ca(s)O2(g) + heat → CaO(s)
(h) NaOH + HCl → NaCl + H2O
(i) KOH + H2SO4 → K2SO4 + H2O
