Write the balanced chemical equations for the following reaction?

 

1. Potassium bromide(aq)+Barium iodide(aq) gives Potassium iodide(aq)+Barium bromide(s)?

2. Zinc carbonate(s) gives Zinc oxide(s) + Carbondioxide(g)?

3. Hydrogen(g)+ Chlorine(g) gives Hydrogenchloride(g)?

4. Magnesium(s)+Hydrochloric acid(aq) gives Magnesium chloride(aq) + Hydrogen(g)?

Answers

1.Reactants:

• Potassium bromide (KBr, aqueous)

• Barium iodide (BaI₂, aqueous)

Products:

• Potassium iodide (KI, aqueous)

• Barium bromide (BaBr₂, solid precipitate

Balanced Equation: 2KBr (aq)+BaI2(aq)→2KI (aq)+BaBr2(s)

2. Balanced Equation: ZnCO3(s)→ZnO (s)+CO2(g)

3. Balanced Equation: H2(g)+Cl2(g)→2HCl(g)

4. Balanced Equation: Mg (s)+2HCl (aq)→MgCl2(aq)+H2(g)

$$\boxed{\text{Mg (s)} + 2\text{HCl (aq)} \rightarrow \text{MgCl}_2 \text{(aq)} + \text{H}_2 \text{(g)}}$$ $$\boxed{\text{H}_2 (g) + \text{Cl}_2 (g) \rightarrow 2\text{HCl} (g)}$$ $$\boxed{\text{ZnCO}_3 \text{(s)} \rightarrow \text{ZnO (s)} + \text{CO}_2 \text{(g)}}$$ $$\boxed{2\text{KBr (aq)} + \text{BaI}_2 \text{(aq)} \rightarrow 2\text{KI (aq)} + \text{BaBr}_2 \text{(s)}}$$