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NEET2011ChemistryElectrochemistryActual

Assertion : A reaction is spontaneous if E_ cell =+ ve. Reason : For E_ cell =+ ve , G is always -ve.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion.
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion.
  3. CIf assertion is true but reason is false.
  4. DIf both assertion and reason are false.

Correct answer

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

Step-by-step solution

For a redox reaction to be spontaneous, the EMF of the cell must be positive. As, - G=n F E_ cell Therefore, for E_ cell =+ ve, G is always negative.

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