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The positive value of the standard elect...

The positive value of the standard electrode potential of `Cu^(2+)//Cu` indicates that.......

A

this redox couple is a stronger reducing agent than the `H^(+)//H_(2)` couple.

B

This redox couple is a stronger oxidising agent than `H^(+)//H_(2)`.

C

Cu can displace `H_(2)` from acid.

D

Cu cannot displace `H_(2)` from acid.

Text Solution

Verified by Experts

The correct Answer is:
B, D
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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Knowledge Check

  • Negative sign in the standard electrode potential indicates

    A
    greater ease of oxidation compared to that of hydrogen
    B
    greater ease of reduction compared to that of hydrogen
    C
    lesser ease of oxidation compared to that of hydrogen
    D
    none of the above

  • The standard reduction potential of Cu^(2+)//Cu and Cu^(2+)//Cu^(+) are 0.339 V and 0.153 V respectively. The standard electrode potential of Cu^(+)//Cu half cell is :

    A
    `0.525 V`
    B
    `0.827 V`
    C
    `0.184 V`
    D
    `0.490 V`

  • The standard reduction potentials of Cu^(2+)//Cu and Cu^(2+)// Cu^(+) are 0.337 V and 0.153 V respectively. The standard electrode potential of Cu^(+)//Cu half cell is:

    A
    `0.184` V
    B
    `0.827` V
    C
    `0.521` V
    D
    `0.490` V