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Question

# Consider the cell:Zn|Zn2+(aq)(1.0M)||Cu2+(aq)(1.0M)||CuThe standard reduction potential are 0.350 V for;Cu2+(aq)+2e−→Cu and -0.763 V for;Zn2+(aq)+2e−→Zn.Assertion: The reaction is spontaneous.Reason: The cell potential is positive.

A
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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B
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
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C
Assertion is true but Reason is false
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D
Assertion is false but Reason is true
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E
Both Assertion and Reason are false
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Solution

## The correct option is A Both Assertion and Reason are true and Reason is the correct explanation of AssertionZn|Zn2+(aq)(1.0M)||Cu2+(aq)(1.0M)||CuAs we know,E=Ecathode−Eanode=0.35−(−0.76)=1.1Vas it is positive so its a spontaneous reaction.

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