Write the balanced chemical equation for the following and identify the type of reaction in each case.
Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) + Barium bromide(s)
2KBr(aq) + BaI₂(aq) → 2KI(aq) + BaBr₂(s) Type: Double displacement reaction
Zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g)
ZnCO₃(s) → ZnO(s) + CO₂(g) Type: Decomposition reaction
Hydrogen(g) + Chlorine(g) → Hydrogen chloride(g)
H₂(g) + Cl₂(g) → 2HCl(g) Type: Combination reaction
Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g)
Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g) Type: Displacement reaction
Explanation
This question tests students' understanding of balancing chemical equations and identifying reaction types. Each sub-part requires writing the correct formulas, balancing atoms on both sides, and classifying the reaction based on definitions from the textbook. The context clearly defines combination, decomposition, displacement, and double displacement reactions.