Question

Реши цепочку превращения:Zn->ZnCl2->Zn(OH)2->ZnO

Answer 1

Zn + 2HCl = ZnCl₂ + H₂
ZnCl₂ + 2KOH = Zn(OH)₂ + 2KCl
Zn(OH)₂ = ZnO + H₂O (t)

Answer 2

Цепочка превращений: Zn -> ZnCl2 -> Zn(OH)2 -> ZnO

1. Zn -> ZnCl2 - When zinc (Zn) reacts with hydrochloric acid (HCl), it forms zinc chloride (ZnCl2). - The chemical equation for this reaction is: Zn + 2HCl -> ZnCl2 + H2 [[4]](https://library.pguas.ru/xmlui/bitstream/handle/123456789/312/%D0%9F%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0%20%D0%BA%D1%83%D1%80%D1%81%D0%B0_%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F_%20_%D0%B7%D0%B0%D0%BE%D1%87%D0%BD%D0%B8%D0%BA%D0%B8%20%D0%B8%20%D1%8D%D0%BA%D1%81%D1%82%D0%B5%D1%80%D0%BD%D0%B0%D1%82_.pdf?sequence=1&isAllowed=y).

2. ZnCl2 -> Zn(OH)2 - Zinc chloride (ZnCl2) reacts with sodium hydroxide (NaOH) to produce zinc hydroxide (Zn(OH)2). - The chemical equation for this reaction is: ZnCl2 + 2NaOH -> Na2ZnO2 + 2H2O [[4]](https://library.pguas.ru/xmlui/bitstream/handle/123456789/312/%D0%9F%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0%20%D0%BA%D1%83%D1%80%D1%81%D0%B0_%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F_%20_%D0%B7%D0%B0%D0%BE%D1%87%D0%BD%D0%B8%D0%BA%D0%B8%20%D0%B8%20%D1%8D%D0%BA%D1%81%D1%82%D0%B5%D1%80%D0%BD%D0%B0%D1%82_.pdf?sequence=1&isAllowed=y).

3. Zn(OH)2 -> ZnO - Zinc hydroxide (Zn(OH)2) decomposes to form zinc oxide (ZnO). - The chemical equation for this reaction is: Zn(OH)2 -> ZnO + H2O [[2]](https://library.pguas.ru/xmlui/bitstream/handle/123456789/302/%D0%A5%D0%B8%D0%BC%D0%B8%D1%8F%20%D0%9F%D1%80%D0%BE%D0%B3%D1%80%D0%B0%D0%BC%D0%BC%D0%B0%20%D0%BA%D1%83%D1%80%D1%81%D0%B0%206-%D0%B5%20%D0%B8%D0%B7%D0%B4.pdf?sequence=1&isAllowed=y).

So, the complete chain of transformations is: Zn -> ZnCl2 -> Zn(OH)2 -> ZnO.