Question

Осуществите следующие превращения: Zn → ZnO → ZnCl2 → Zn(OH)2 → Na2[Zn(OH)4]

Answer 1

1)2Zn+O2=2ZnO
2)ZnO+2HCl=ZnCl2+H2O
3)ZnCl2+2KOH=Zn(OH)2+2KCl
4) Zn(OH)2+NaOH=Na2[Zn(OH)4]

Answer 2

Transformation Steps:

To perform the given transformations: Zn → ZnO → ZnCl2 → Zn(OH)2 → Na2[Zn(OH)4], we can follow these steps:

1. Zn → ZnO: - Zinc (Zn) reacts with oxygen (O2) to form zinc oxide (ZnO). - The balanced chemical equation for this reaction is: 2Zn + O2 → 2ZnO.

2. ZnO → ZnCl2: - Zinc oxide (ZnO) can react with hydrochloric acid (HCl) to form zinc chloride (ZnCl2) [[8]](https://www.lib.tpu.ru/fulltext/m/2009/m11.pdf). - The balanced chemical equation for this reaction is: ZnO + 2HCl → ZnCl2 + H2O.

3. ZnCl2 → Zn(OH)2: - Zinc chloride (ZnCl2) can react with sodium hydroxide (NaOH) to form zinc hydroxide (Zn(OH)2). - The balanced chemical equation for this reaction is: ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl.

4. Zn(OH)2 → Na2[Zn(OH)4]: - Zinc hydroxide (Zn(OH)2) can react with sodium hydroxide (NaOH) to form sodium tetrakis(hydroxido)zincate(II) (Na2[Zn(OH)4]) [[2]](https://nsau.edu.ru/file/108381/). - The balanced chemical equation for this reaction is: Zn(OH)2 + 2NaOH → Na2[Zn(OH)4].

Therefore, the complete transformation is as follows: Zn → ZnO → ZnCl2 → Zn(OH)2 → Na2[Zn(OH)4].

Please note that the provided transformation steps are based on the given information and may not cover all possible reactions or conditions.