Assertion : In the Daniel cell, if concentration of Cu2+ and Zn2+ ions are doubled, the emf of the cell will not change. Reason: If the concentration of ions in contact with the metals is doubled, the electrode potential is doubled.
A
assertion is true, reason is true; reason is correct explanation for assertion.
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B
assertion is true, reasonis true; reasonis NOT a correct explanation for assertion.
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C
assertion is true, reasonis false
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D
assertion is false, reason is true
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Solution
The correct option is C
assertion is true, reasonis false
As we know,
For Daniell cell,
if the concentration of Cu2+ and Zn2+ ions are doubled, the EMF of the cell will be the same according to the equation.