Question

Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq
3 CuSO4 + 2 Al → Al2(SO4)3 + 3 Cu
MgO + CO2 → MgCO3
2 H2O(l) → 2 H2(g) + O2(g)
MgCl2 + Ca(OH)2 → Mg(OH)2 + CaCl2
One of the reactions you conducted can actually be categorized as TWO different types of reactions. Which reaction is this, and what are the two types of reactions?

Answer 1

Pb(NO3)2(aq) + 2KI(aq) → PbI2(s) + 2KNO3(aq) = Precipitation rxn
3 CuSO4 + 2 Al → Al2(SO4)3 + 3 Cu = Displacement rxn / Redox
MgO + CO2 → MgCO3 = Acid-Base (sort of)
2 H2O(l) → 2 H2(g) + O2(g) = Decomposition / Disproportionation
MgCl2 + Ca(OH)2 → Mg(OH)2 + CaCl2 = Precipitation rxn