Home
Class 12
CHEMISTRY
Calculate the maximum work that can be o...

Calculate the maximum work that can be obtained from the Daniell cells: `Zn|Zn^(2+)(aq)||Cu^(2+) (aq)|Cu` Given E^(c-)._((Zn^(2+)|Zn))=-0.76V and E^(c-)._((Cu^(2+)|Cu))=0.34V

Text Solution

Verified by Experts

Given : `E^@ (Zn^(2+) | Zn) = -0.76 V, E^@ (Cu^(2+)|Cu) = 0.34 V`.
Overall cell reaction `Zn (s) + Cu_((aq))^(2+) rarr Cu (S) + Zn_((aq))^(2+)`
`E_("cell")^@ = E_("(Cathode)")^@ -E_("(Anode)")^@`
`= E_((Cu^(2+)|Cu))^@ - E_((Zn^(2+) | Zn))^@`
= 0.34 +0.76 = 1.10 V.
Maximum Work `Delta G^@ = -n F E_("cell")^@`
`Delta G^@ = -2 xx 96500 xx 1.10`
`Delta G^@ = -212300 CV`.
Promotional Banner

Topper's Solved these Questions

  • SOLVED MODEL TEST PAPER-3

    ACCURATE PUBLICATION|Exercise SECTION D|12 Videos

  • SOLVED MODEL TEST PAPER-3

    ACCURATE PUBLICATION|Exercise SECTION B|16 Videos

  • SOLVED MODEL TEST PAPER-2

    ACCURATE PUBLICATION|Exercise SECTION D|11 Videos

  • SURFACE CHEMISTRY

    ACCURATE PUBLICATION|Exercise COMPREHENSION QUESTIONS |49 Videos

Similar Questions

Explore conceptually related problems

Calculate the standard Gibbs energy for the cell : Zn(s)+Zn^(2+)(aq)||Cu^(2+)(aq)|Cu(s) E_((Zn^(2+)//Zn)^(@))=-0.76V,E_((Cu^(2+)//Cu))^(@)=0.34V , F=96500 C .

Calculate the standard Gibbs energy for the cell : Zn(s)|Zn^(2+)(aq)||Cd^(2+)(aq)|Cd(s) E_((Zn^(2+)//Zn))^(@)=-0.76V,E_((Cd^(2+)//Cd))^(@)=-0.403V,F=96500C .

Calculate the emf of cell, Al|Al^(3+)||Cu^(2+)|Cu Given : E^(@) (Al^(3)|Al) = - 1.66V and E^(@) (Cu^(2+)|Cu) = + 0.34 V

Write Nernst equation and cell reaction of the following cell: Zn|Zn^(2+)||Cu^(2+)|Cu

Calculate the standard Gibbs energy for the cell : Zn(s)|Zn^(2+)(aq)||Sn^(2+)(aq)|Sn(s) E_((Zn^(2+)//Zn))^(@)=-0.76V,E_((Sn^(2+)//Sn))^(@) = -0.16V , F=96500C .

Write Nernst equation and calculate the e.m.f of the following cell at 298 K: Zn|Zn^(2+)(0.01M)||Fe^(2+)(0.005M)|Fe Given that: (Zn^(2+)//Zn)=-0.763V and E_(Fe^(2+)//Fe)^(@)=-0.44V" "log2=0.3010 .