Write the balanced chemical equation for the following and identify the type of reaction in each case

Balanced Chemical Equations and Types of Reactions

(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)

Balanced Equations and Reaction Types:

(a) Potassium bromide(aq) + Barium iodide(aq) → Potassium iodide(aq) + Barium bromide(s)
```
2 KBr (aq) + BaI₂ (aq) → 2 KI (aq) + BaBr₂ (s)
```
Type of Reaction: Double displacement (precipitation) reaction.
(b) Zinc carbonate(s) → Zinc oxide(s) + Carbon dioxide(g)
```
ZnCO₃ (s) → ZnO (s) + CO₂ (g)
```
Type of Reaction: Decomposition reaction.
(c) Hydrogen(g) + Chlorine(g) → Hydrogen chloride(g)
```
H₂ (g) + Cl₂ (g) → 2 HCl (g)
```
Type of Reaction: Combination (synthesis) reaction.
(d) Magnesium(s) + Hydrochloric acid(aq) → Magnesium chloride(aq) + Hydrogen(g)
```
Mg (s) + 2 HCl (aq) → MgCl₂ (aq) + H₂ (g)
```
Type of Reaction: Single displacement (redox) reaction.