Home
Class 12
CHEMISTRY
The E^(@) (M^(2+)//M) value for copper i...

The `E^(@) (M^(2+)//M)` value for copper is positive (0.34 volt). What is possible reason for this

Text Solution

Verified by Experts

Reduction potential will depend on
`Cu(s)toCu(g),triangleH(atomisation)`
`(ii)Cu(g)toCu^(2+),(IE_(1)+IE_(2))`
`(iii)Cu^(2+)overset(H_(2)O)toCu^(2+),(triangleH_(Hyd))`
Due to high enthalpy of atomisation and low `triangleH_(hydration)` energy `E^(@)_(cu^(+2)//Cu)`is high
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ALCOHOLS, PHENOLS AND ETHERS

    AAKASH INSTITUTE|Exercise Try yourself|4 Videos

  • ALCOHOLS, PHENOLS AND ETHERS

    AAKASH INSTITUTE|Exercise Exercise|40 Videos

  • ALCOHOLS, PHENOLS AND ETHERS

    AAKASH INSTITUTE|Exercise Try Yourself|5 Videos

Similar Questions

Explore conceptually related problems

The E^(@)(M^(2+)//M) value for copper is positive (+0.34 V). What is possibly the reason for this ?

The E^(0)(M^(2+)//M) value for copper is positive (+0.34V) . What is possibly the reason for this?

Knowledge Check

  • The SRP of cadmium and copper electrodes are -0.4 volt and +0.34volt respectively. The e.m.f. of the cell formed from them is

    A
    0.74Volt
    B
    `-0.06` volt
    C
    `-0.74 `volt
    D
    `+0.06 `volt

    • Similar Questions

    Explore conceptually related problems

    The E^(@) ( M^(@+) //M) value for copper is positive ( + 0.34V) . What is possibly the reason for this ?

    The E(Theta)(M^(2+)//M) Value for copper is positive (+0.34V) . What is possibly the statement-2 for this?

    Consider the standard electrode potential values (M2+/M) of the elements of the first transition series. {:(Ti,,V,,Cr,,Mn,,Fe,,CO,,Ni,,Cu,,Zn),(-1.63,,-1.18,,-0.90,,-1.18,,-0.44,,-0.28,,-0.25,,+0.34,,-0.76):} Explain : (i) E^(@) value for copper is positive. (ii) E^(@) value of Mn is more negative as expected from the trend. (iii) Cr^(2+) is a stronger reducing agent than Fe^(2+) .

    Can a solution o f1 M copper suplhate be stroed in a vessel made of nickel metal ? Give that E^(@) Ni,Ni^(2+)=+0.25 "volt" , E^(@) Cu,Cu^(2+)=-34 volt or is it possible to stroe copper suplhate solution in a nickel vessel ?

    Can a solution o f1 M copper suplhate be stroed in a vessel made of nickel metal ? Give that E^(@) Ni,Ni^(2+)=+0.25 "volt" , E^(@) Cu,Cu^(2+)=-34 volt or is it possible to stroe copper suplhate solution in a nickel vessel ?

    {:(E_(M^(2+)//M)^(@),Cr,Mn, Fe, Co, Ni, Cu),(,-0.91,-1.18,-0.44,-0.28,-0.25,+0.34):} From the given data of E^(@) values, answer the following questions : (i) Why is E_((Cu^(2+)//Cu))^(@) value exceptionally positive ? (ii) Why is E_((M^(2+)//M))^(@) vlue highly negative as compared to other elements ? (iii) Which is a stronger reducing agent , Cr^(2+) or Fe^(2+) ? Give reason.

    The normal oxidation potential of zinc referred to the standard hydrogen electrode is 0.76 volt and that of copper is -0.34 volt at 25^(@)C . When excess of zinc is added to a solution of copper sulphate the zinc displace copper till equilibrium is reached. What is the ratio of concentration of Zn^(2+) to Cu^(2+) ions at equilibrium ?

    Home
    Profile