Question

Zn(OH)2 → Zn(NO3)2 → ZnCO3 → ZnO → ZnSO4

Answer 1

Ответ:

1) Zn(OH)2 + 2HNO3 -> Zn(NO3)2 + 2H2O

2) Zn(NO3)2 + CaCO3 -> Ca(NO3)2 + ZnCO3

3) ZnCO3 -> ZnO + CO2

4) ZnO + H2SO4 -> ZnSO4 + H2O

Answer 2

The chemical reactions you've provided involve the transformation of Zinc hydroxide (Zn(OH)2) through a series of reactions into Zinc sulfate (ZnSO4). Let's break down the reactions step by step:

1. Zinc hydroxide (Zn(OH)2): Zn(OH)2 is a basic compound formed when Zinc ions (Zn^2+) react with hydroxide ions (OH^-). The chemical equation for this reaction is: Zn^2+ + 2OH^- → Zn(OH)2

2. Zinc nitrate (Zn(NO3)2): To transform Zn(OH)2 into Zinc nitrate (Zn(NO3)2), it must react with nitric acid (HNO3) to replace the hydroxide ions with nitrate ions. The chemical equation for this reaction is: Zn(OH)2 + 2HNO3 → Zn(NO3)2 + 2H2O

3. Zinc carbonate (ZnCO3): Zinc nitrate (Zn(NO3)2) can undergo a reaction with sodium carbonate (Na2CO3) or any other carbonate source to produce Zinc carbonate (ZnCO3). The chemical equation for this reaction is: Zn(NO3)2 + Na2CO3 → ZnCO3 + 2NaNO3

4. Zinc oxide (ZnO): Zinc carbonate (ZnCO3) can further decompose into Zinc oxide (ZnO) and carbon dioxide (CO2) upon heating. The chemical equation for this reaction is: ZnCO3 → ZnO + CO2

5. Zinc sulfate (ZnSO4): Finally, Zinc oxide (ZnO) can react with sulfuric acid (H2SO4) to form Zinc sulfate (ZnSO4) and water (H2O). The chemical equation for this reaction is: ZnO + H2SO4 → ZnSO4 + H2O

So, the overall transformation can be represented as follows:

Zn(OH)2 → Zn(NO3)2 → ZnCO3 → ZnO → ZnSO4