Question

5. Why does dry HCL gas not change the colour of the dry
7. What are amphoteric oxides? Give an example.​

Answer 1

Answer:

Dry HCL it does not dissociate to give H  

+

 ions. Acids dissociate to give ions only in the aqueous solution. In this, HCL is not in the aqueous form nor the litmus paper is wet, so the colour of the litmus paper does not change.

Explanation:

Answer 2

Answer:

5) Dry HCl gas does not contain H+ ions. It is only in the aqueous solution that an acid dissociates to give ions. Since in this case, neither HCl is in the aqueous form nor the litmus paper is wet, therefore, the colour of the litmus paper does not change

7) Amphoteric oxides react with both acids and alkalis to form salt and water. Examples of amphoteric oxides are zinc oxide and aluminium oxide

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