Question

ZnO → Zn(NO3)2 → Zn(OH)2 → ZnO → ZnСl2

Answer 1

ZnO + 2HNO3 = Zn(NO3)2 + H2O

Zn(NO3)2 + 2KOH = 2KNO3 + Zn(OH)2

Zn(OH)2 = ZnO + H2O

ZnO + 2HCl = ZnCl2 + H2O

Answer 2

The sequence of chemical reactions you've mentioned involves the transformation of zinc oxide (ZnO) through several intermediate compounds. Let's break down each step:

1. ZnO → Zn(NO3)2: In this step, zinc oxide (ZnO) reacts with nitric acid (HNO3) to form zinc nitrate (Zn(NO3)2) and water (H2O): ZnO + 2HNO3 → Zn(NO3)2 + H2O

2. Zn(NO3)2 → Zn(OH)2: Zinc nitrate (Zn(NO3)2) reacts with sodium hydroxide (NaOH) to produce zinc hydroxide (Zn(OH)2) and sodium nitrate (NaNO3): Zn(NO3)2 + 2NaOH → Zn(OH)2 + 2NaNO3

3. Zn(OH)2 → ZnO: Zinc hydroxide (Zn(OH)2) can dehydrate to form zinc oxide (ZnO) when heated: Zn(OH)2 (heating) → ZnO + H2O

4. ZnO → ZnCl2: This step is not a direct transformation from zinc oxide (ZnO) to zinc chloride (ZnCl2) through a simple chemical reaction. To convert ZnO to ZnCl2, you typically need to involve a different set of reactions, such as reacting ZnO with hydrochloric acid (HCl) or zinc metal with hydrochloric acid to produce ZnCl2.

If you want to convert zinc oxide (ZnO) to zinc chloride (ZnCl2), you can follow these steps:

1. ZnO + 2HCl → ZnCl2 + H2O React zinc oxide with hydrochloric acid to produce zinc chloride and water.

Keep in mind that the initial sequence of reactions you mentioned involves different compounds and may not directly lead to the formation of zinc chloride. If you have a specific reaction pathway or purpose in mind, please provide more details for a more accurate explanation.