For an element X, the following standard reduction potentials exist at a temperature of our study: X^3+(aq)...

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Chemistry

For an element X, the following standard reduction potentialsexist at a temperature of our study:
X^3+(aq) + 2 eâ€“ â†’ X^+(aq) Îµ1Â° = 1.192 V
X^4+(aq) + 3 eâ€“ â†’ X^+(aq) Îµ2Â° = 1.241 V
If [X^+] = 0.170 M, [X^3+] = 5.670 M, and [X^4+] = 0.174 M, atwhat temperature (in Â°C) will the galvanic/voltaic cell made fromthe above two half-reactions begins to become nonspontaneous?

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4.4 Ratings (811 Votes)

The given half cell reactions are X3aq 2 e Xaq 1 1192 V X4aq 3 e Xaq 2 1241 V Here both the reactions are writeen in Reduction form But we know in an electrochemical cell both Reduction ie gain if electron and Oxidation ie loss of electron takes place So according to the rule the half cell which has the larger value is the actual reduction half cell where as the other is the Oxidation one So here our Reduction See Answer

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