Question

Question :— Explain why dilute hydrochloric acid reacts with magnesium liberating hydrogen but the same is not when the acid reacts with lead .
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Answer 1

Answer:

Leads react slowly with hydrochloric acid to release hydrogen but the reaction eventually stops. Lead chloride formed is insoluble and coats the metal and forms a barrier that does not allow the acid to come in contact with the metal.

Explanation:

Answer 2

Answer:

The reaction of two metals in different container of same acid is differentiable because of the following reasons :-

1. Difference in boiling and melting points
2. Difference in bond properties
3. Different valences
4. Different molar mass
5. Different energy exchanges