Question

Write the balanced chemical equation for the following and identify the type of reaction
in each case.
(a)Potassium bromide (aq) + Barium iodide (aq) → Potassium iodide (aq) +
Barium bromide()
(b) Zinc carbonate () → Zinc oxide () + Carbon dioxide (g)
(c) Hydrogen (g) + Chlorine (g) → Hydrogen chloride (g)
(d) Magnesium () + Hydrochloric acid (aq) → Magnesium chloride (aq) + Hydrogen (g)

Answer 1

(a) 2KBr (aq) + BaI2 (aq) → 2KI (aq) + BaBr2 (*): Double displacement reaction

(b) ZnCO3 () → ZnO () + CO2 (g): Decomposition reaction

(c) H2 (g) + Cl2 (g) → 2HCl (g): Combination reaction

(d) Mg (*) + 2HCl (aq) → MgCl2 (aq) + H2 (g) : Displacement Reaction