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Assertion (A) : In a Daniell cell, if th...

Assertion `(A) :` In a Daniell cell, if the concentration of `Cu^(2+)` and `Zn^(2+)` ions are doubled, the `EMF` of the cell will be doubled.
Reason `(R) :` If the concentration of ions in contact with metals is doubled, the electrode potential is doubled.

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct explanation for assertion.

C

If assertion is correct but reason is incorrect.

D

If assertion and reason both are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) Correct reason : The effect of concentration on electrode potentialis guided by Nernst equation. On doubling the concentration, emf will remain unchanged since `([Zn^(2+)])/([Cu^(2+)])` will remain same.
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