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(s)
(b) Zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g)
(c) Hydrogen(g) + Chlorine(g) → Hydrogen chloride(g)
(d) Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g)
Answer:
(a)
Reaction:
Potassium bromide (aq) + Barium iodide (aq) → Potassium iodide (aq) + Barium bromide (s)
Balanced Equation:
2KBr(aq) + BaI2(aq) → 2KI(aq) + BaBr2(s)
Type of Reaction:
➡️ Double Displacement Reaction (Precipitation)
(b)
Reaction:
Zinc carbonate (s) → Zinc oxide (s) + Carbon dioxide (g)
Balanced Equation:
ZnCO3(s) → ZnO(s) + CO2(g)
Type of Reaction:
➡️ Decomposition Reaction
(c)
Reaction:
Hydrogen (g) + Chlorine (g) → Hydrogen chloride (g)
Balanced Equation:
H2(g) + Cl2(g) → 2HCl(g)
Type of Reaction:
➡️ Combination Reaction
(d)
Reaction:
Magnesium (s) + Hydrochloric acid (aq) → Magnesium chloride (aq) + Hydrogen (g)
Balanced Equation:
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
Type of Reaction:
➡️ Displacement Reaction