Question

Zn→ ZnCl2→ Zn(OH)2 → ZnSO4→ BaSO4

Answer 1

Ответ:

Zn

Zn+Cl2=ZnCl2

ZnCl2+2NaOH=Zn(OH)2+2NaCl

Zn(OH)2+BaSO4=Ba(OH)2+ZnSO4.

Answer 2

The chemical reactions you've listed describe a series of transformations involving the element zinc (Zn) and various compounds. Let's break down each step:

1. Zn → ZnCl2: In this reaction, zinc (Zn) reacts with chlorine (Cl2) gas to form zinc chloride (ZnCl2). The balanced chemical equation for this reaction is: Zn + Cl2 → ZnCl2

2. ZnCl2 → Zn(OH)2: Zinc chloride (ZnCl2) can react with a base, such as sodium hydroxide (NaOH), to form zinc hydroxide (Zn(OH)2). The balanced equation for this reaction is: ZnCl2 + 2NaOH → Zn(OH)2 + 2NaCl

3. Zn(OH)2 → ZnSO4: Zinc hydroxide (Zn(OH)2) can further react with sulfuric acid (H2SO4) to produce zinc sulfate (ZnSO4). The balanced equation for this reaction is: Zn(OH)2 + H2SO4 → ZnSO4 + 2H2O

4. ZnSO4 → BaSO4: Lastly, zinc sulfate (ZnSO4) can undergo a double displacement reaction with barium chloride (BaCl2) to form barium sulfate (BaSO4) and zinc chloride (ZnCl2). The balanced equation for this reaction is: ZnSO4 + BaCl2 → BaSO4 + ZnCl2

Overall, the sequence of reactions you provided describes the transformation of zinc (Zn) through several chemical reactions resulting in the formation of barium sulfate (BaSO4) and zinc chloride (ZnCl2).