Electrolytic refining and corrosion prevention

Question 1

Which material will be used as cathode and anode for refining of zinc metal by this process?

Accepted Answer

- **Cathode:** Thin strip of pure zinc metal. - **Anode:** Impure block of zinc metal.

Question 2

Name the electrolyte used in this process. Where do we get pure zinc after passing electric current?

Accepted Answer

- **Electrolyte:** Acidified zinc sulphate solution ($	ext{ZnSO}_4$). - **Pure zinc deposition:** Pure zinc deposits on the **cathode**.

Question 3

How does zinc prevent rusting of iron? Also, name the process.

Accepted Answer

- **Process name:** Galvanisation. - **Mechanism:** Zinc is more reactive than iron. It acts as a protective barrier and sacrificially corrodes prior to iron, preventing oxygen and moisture from reaching the iron surface.

Electrolytic refining and corrosion prevention

Passage / data set

Question 1 of 3

Explanation

Question 2 of 3

Explanation

Question 3 of 3

Explanation

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