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Assertion: A sol of As(2)S(3) prepared b...

Assertion: A sol of `As_(2)S_(3)` prepared by the action of `H_(2)S` on `As_(2)O_(3)` is negatively power.
Reason: It is due to the presence of `S^(2-)` ions in the diffused layer.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
C
Correct Reason: it is due to adsorption of `S^(2-)` ions on the surface of the colloidal particles and `H^(+)` ions in the diffused layer.
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Assertion : A sol of As_(2)S_(3) prepared by the action of H_(2)S on As_(2)O_(3) is negatively charged. Reason : It is due to the adsorption of H^(+) ions on the surface of the colloidal particles and S^(2-) ions on the diffused layer.

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