Home
Class 12
CHEMISTRY
The cell in which of the following react...

The cell in which of the following reaction occurs:
`2Fe^(3+)(aq)+2I^(-)(aq) to 2Fe^(2+)(aq)+I_(2)(s)" has "E_("cell")^(0)=0.236V" at "298K`
Calculate the standard Gibbs energy and the equilibrium constant of the cell reaction.

Text Solution

Verified by Experts

`Delta_rG^@=-nFE_(cell)^@`
`=-2 times 96500 times 0.236`
`=45.6kJ//mol`
As `E_(cell)^@=-0.0591/2log K_c`
`=(0.236 times 2)/0.0591=log K_c`
or `K_C=antilog 7.9864 times 8`
`approx antilog 8`
`=10 times 10^8`
Promotional Banner

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 -II)|8 Videos

  • ELECTRO-CHEMISTRY

    OSWAAL PUBLICATION|Exercise Topic - 3 ELECTROLYSIS , LAWS OF ELECTROLYSIS, BATTERIES, FUEL CELLS AND CORROSION (VERY SHORT ANSWER TYPE QUESTIONS)|6 Videos

  • ELECTRO-CHEMISTRY

    OSWAAL PUBLICATION|Exercise Topic -2 REDOX REACTION, ELECTROCHEMICAL CELL, GALVANIC CELL, EMF OF CELL, STANDARD ELECTRODE POTENTIAL, NERNST EQUATION (SHORT ANSWER TYPE QUESTIONS)|19 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

Calculate Delta_rG^@ for the following reactions: Fe^(+2) (aq)+Ag^(+) (aq) to Fe^(+3) (aq)+Ag (s)

Identify the oxidant and the reductant in the following chemical reactions: 2I^(-)(aq)+Cl_2(g) to 2Cl^(-) (aq)+I_2(s)

For a cell involving two electron changes, E_("cell")^(@) =0.3V at 25^(@)C . The cell equilibrium constant of the reaction is

b) Calculate Delta_(r)G^(@) for the following reaction: Fe_((aq))^(+2)+Ag_((aq))^(+)rarr Fe_((aq))^(+3)+Ag(s)." "("Given : "E_("cell")^(@)=+0.03V, F=96500C) .

The equilibrium constant of the following redox reaction at 298 K is 1xx10^(8) . 2Fe^(3+)(aq)+2I^(-)(aq) hArr 2Fe^(2+)(aq)+I_(2)(s) If the standard reduction potential of iodine becoming iodide is +0.54V , what is the standard reduction potential of Fe^(3+)//Fe^(2+) ?

Represent the galvanic cell in which the reaction Zn(s)+Cu^(2+) (aq) to Zn^(2+) (aq)+Cu(s) takes place.

Equilibrium constant of a reaction is 0.008. Calculate the standard Gibb's energy change at 298 K.