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Karnataka Board PUCPUC Science 2nd PUC Class 12

Assertion: ECell should have a positive value for the cell to function. Reason: Ecathode<Eanode

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Question

Assertion: ECell should have a positive value for the cell to function.

Reason: `"E"_("cathode") < "E"_("anode")`

Options

  • Both assertion and reason are true and the reason is the correct explanation of assertion.

  • Both assertion and reason are true and the reason is not the correct explanation of assertion.

  • Assertion is true but the reason is false.

  • Both assertion and reason are false.

  • Assertion is false but reason is true.

MCQ
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Solution

Assertion is true but the reason is false.

Explanation:

ΔG- = - `"nFE"_"cell"^-`

When the value of `"E"_"cell"^0` is positive then ΔG− becomes negative. Hence the reaction becomes possible.

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Chapter 3: Electrochemistry - Exercises [Page 42]

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NCERT Exemplar Chemistry Exemplar [English] Class 12
Chapter 3 Electrochemistry
Exercises | Q V. 57. | Page 42

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