1.

The positive vlue of the standard electrode potential of Cu^(2+)//Cu indicates that_____.

Answer»

this redox couple is a stronger reducing AGENT than the `H^(+)//H_(2)` couple.
This redox couple is a stronger oxidising agent than `H^(+)//H_(2)`.
Cu can displace `H_(2)` from acid.
Cu cannot displace `H_(2)` from acid.

Solution :POSITIVE value for `Cr^(2+)//Cu` indicates that this REDUCTION takes place EASILY compared to `H^(+)//H^(2+)`. Hence, it is stronger oxidizing agent, i.e., (b) is correct. It is also implies that Cu cannot reduce `H^(+)` ions of an acid to `H_(2)`. i.e., (d) is correct.


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