Assertion :Copper metal gets readily corroded in an acidic aqueous solution. Reason: Free energy change for this process is positive.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is D Both Assertion and Reason are incorrect.
Copper lies below hydrogen in electrochemical series so it cannot displace $H_{2}$ from dilute acids.
Hence it is not easily corroded in acidic solutions.
Further, corrosion is a spontaneous process for which free energy change must be negative.
Hence, both assertion and reason are incorrect.

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