Question

ZnO --> zn -->ZnSO4 --> Zn(OH)2

Answer 1

ZnO+H2---Zn+H2O

Zn+H2SO4---ZnSO4+H2

ZnSO4+2KOH---Zn(OH)2+K2SO4

Answer 2

The series of chemical reactions you've provided describes the conversion of zinc oxide (ZnO) into zinc hydroxide (Zn(OH)2) via an intermediate step where zinc metal (Zn) is formed and then reacts with sulfuric acid (H2SO4) to produce zinc sulfate (ZnSO4). Let's break down each step:

1. ZnO --> Zn: This reaction represents the reduction of zinc oxide (ZnO) to zinc metal (Zn). This can be achieved through a variety of methods, such as heating ZnO in the presence of a reducing agent or using a suitable reducing atmosphere.

2. Zn + H2SO4 --> ZnSO4 + H2: Zinc metal (Zn) reacts with sulfuric acid (H2SO4) to form zinc sulfate (ZnSO4) and release hydrogen gas (H2).

3. ZnSO4 + 2H2O --> Zn(OH)2 + H2SO4: Zinc sulfate (ZnSO4) reacts with water (H2O) to produce zinc hydroxide (Zn(OH)2) and sulfuric acid (H2SO4).

In summary, the overall chemical transformation is as follows:

ZnO --> Zn --> ZnSO4 --> Zn(OH)2

It's important to note that the actual reaction conditions, such as temperature, pressure, and concentration of reactants, can significantly influence the reaction outcomes. Also, the chemical reactions you provided involve aqueous solutions, but these reactions may be carried out in different solvents or environments depending on the specific experimental setup.