Home
Class 12
CHEMISTRY
Standard EMF of the cell: Cu||Cu^(2+) ...

Standard EMF of the cell:
`Cu||Cu^(2+) (1m)||Ag^(+) (1m)|Ag`
is 0.46 at `25^@C`. Find the value of standard free energy charge for the reaction that occurs in the cell.

Text Solution

Verified by Experts

`Delta G^@=-nFE^@ cell`
`n=2,F=96,500 E^@=0.46V`
`=-2 times 96500 times 0.46`
`=-108080 Jou l e s (or)-108.08` K Jou l es
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ELECTRO-CHEMISTRY

    OSWAAL PUBLICATION|Exercise Topic -2 REDOX REACTION, ELECTROCHEMICAL CELL, GALVANIC CELL, EMF OF CELL, STANDARD ELECTRODE POTENTIAL, NERNST EQUATION (LONG ANSWER TYPE QUESTION -I)|7 Videos

  • ELECTRO-CHEMISTRY

    OSWAAL PUBLICATION|Exercise Topic -2 REDOX REACTION, ELECTROCHEMICAL CELL, GALVANIC CELL, EMF OF CELL, STANDARD ELECTRODE POTENTIAL, NERNST EQUATION (LONG ANSWER TYPE QUESTION -II)|8 Videos

  • ELECTRO-CHEMISTRY

    OSWAAL PUBLICATION|Exercise Topic -2 REDOX REACTION, ELECTROCHEMICAL CELL, GALVANIC CELL, EMF OF CELL, STANDARD ELECTRODE POTENTIAL, NERNST EQUATION (VERY SHORT ANSWER TYPE QUESTIONS)|2 Videos

  • D - BLOCK ELEMENTS F - BLOCK ELEMENTS

    OSWAAL PUBLICATION|Exercise TOPIC - 2 (F - BLOCK ELEMENT , LANTHANOIDS AND ACTINOIDS)(LONG ANSWER TYPES QUESTIONS)|6 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    OSWAAL PUBLICATION|Exercise TOPIC 2 (LONG ANSWER TYPE QUESTIONS-II)|2 Videos

Similar Questions

Explore conceptually related problems

(a) Standard EMF of the cell, Cu|Cu 2+| Ag Ag| is 0.46V at 25°C. Find the value of standard free energy change for the reaction that occurs in the cell. (b) Draw the neat labeled diagram of SHE and write its symbolic representation.

Calculate the standard emf of the cell having the standard free energy change of the cell reaction is -64.84 kJ for 2 electrons transfer.

Knowledge Check

  • The e.m.f. of the cell : Cu(s)"|"Cu^(2+)(1M)"||"Ag^(+)(1M)"|"Ag is 0.46 V. The standard reduction reduction potential of Ag^(+)//Ag is 0.80 V. The standard reduction potential of Cu^(2+)//Cu is

    A
    `-0.34`V
    B
    1.26 V
    C
    `-1.26` V
    D
    `0.34` V

  • The e.m.f. of the cell, Cu(s)|Cu^(2+)(aq)"||"Ag^(+)(aq)|Ag(s) is 0.46 V. The standard reduction potential of Ag^(+)//Ag is 0.80 V. The standard reduction potential of Cu^(2+)|Cu will be

    A
    `-0.34` V
    B
    1.26 V
    C
    `-1.26` V
    D
    0.34 V

  • For the cell reaction Zn(s) +Cu^(2+)(0.1M) rarr zn^(2+)(0.01M) + Cu(s) , If E^(@) is the strandard e.m.f. of the cell, then

    A
    `E=E^(@)`
    B
    `E gt E^(@)`
    C
    `E lt E^(@)`
    D
    `E=0`

    • Similar Questions

    Explore conceptually related problems

    The relationship between free energy change and e.m.f. of a cell is

    The equilibrium constant K_p for the, A+B leftrightarrow C+D is 8.25 at 27^@C Calculate the standard free energy charge of reaction at the same temperature.

    A fuel cell generates a standard electrode potential of 0.7 V, involving 2 electrons in its cell reaction. Calculate the standard free energy change for the reaction. "Given F= 96487 C mol"^(-1) .

    a) For the electrochemical cell represented as: Cu_((s))|Cu_((aq))^(2+)||Ag_((aq))^(+)|Ag_((s)) , write the half cell reaction that occurs at (i) anode (ii) cathode

    The e.m.f. of a cell reaction is positive when the free energy of the cell reaction is :

    Home
    Profile