Home
Class 12
CHEMISTRY
The EMF of the following cell : Cd(s)|...

The `EMF` of the following cell `:`
`Cd(s)|CdCl_(2)(0.10M)|AgCl(s)|Ag(s)` is `0.6915V` at `0^(@)C` and `0.6753V` at `25^(@)C` . The `DeltaH` of reaction in `kJ` at `25^(@)C` is

A

` - 17 k J`

B

` -234 . 7 k J`

C

` + 123 . 5`

D

` - 167 . 26 k J`

Text Solution

Verified by Experts

The correct Answer is:
D
`Delta H=- nFE + nFT (delE)/(delT)_p`
` =- 2 xx 96500 xx 0. 6753 + 2 xx 96500 xx 298`
` =((0.67553 -0.915)/(25)) =- 167.6 k J`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    A2Z|Exercise Section B - Assertion Reasoning|22 Videos

  • ELECTROCHEMISTRY

    A2Z|Exercise AIPMT/NEET Questions|35 Videos

  • ELECTROCHEMISTRY

    A2Z|Exercise Fuel Cell And Batteries|10 Videos

  • COORDINATION COMPOUNDS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF METALS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

The emf of the following cell: Cd(s)| CdCl_(2) (0.10M)|AgCl(s)Ag(S) Is 0.6915V at 0.6753V at 25^(@) C . The DeltaH of reaction in KJ at 25^(@)C is

The standard emf of the cell. Cd(s) | CdCl_(2) (aq) rightarrow 2Ag(s) + Cd^(2+) (aq) + 2Cl^(-)(aq) is 0.6915 V at 0^(@) and 0.6753 V at 25^(@)C . The DeltaH^(@) of the reaction at 25^(@)C is:

The standard emf of the cell, Cd(s) |CdCI_(2) (aq) (0.1M)||AgCI(s)|Ag(s) in which the cell reaction is Cd(s) +2AgCI(s) rarr 2Ag(s) +Cd^(2+) (aq) is 0.6915 V at 0^(@)C and 0.6753V at 25^(@)C . The DeltaH of the reaction at 25^(@)C is,-

The EMF of the cell : Pt, H_(2)(1atm)|H^(o+)(aq)||AgCl|Ag is 0.27 and 0.26V at 25^(@)C , respectively. The heat of the reaction occuring inside the cell at 25^(@)C is ………………….. kJ K^(-1)

The EMF of the following cellis 1.05V at 25^(@)C: Pt,H_(2)(g)(1.0 atm)|NaOH(0.1m),NaCl(0.1M)|AgCl(s),Ag(s) a. Write the cell reaction, b. Calculate pK_(w) of water.

Calculate the emf of the following cell at 25^(@)C Ag(s) |Ag+ (10^(-3)M) | |Cu 2+ (10^(-1)M | Cu(s) :

A2Z-ELECTROCHEMISTRY-Construction And Working Of A Cell, Electrochemical Series And Its Applications
  1. The reaction 1//2H2(g)+AgCl(s) rarr H^(o+)(aq)+Cl^(c-)(aq)+Ag(s) oc...

    Text Solution

    |

  2. The reduction potential of a half-cell consisting of a Pt electrode im...

    Text Solution

    |

  3. The highest electrical conductivity of the following aqueous solutions...

    Text Solution

    |

  4. Given that E^@ (Zn^(2+) //Zn) =- 0.763 V and E^@ ( Cd^(2+) //Cd) = -0....

    Text Solution

    |

  5. A huydrgen electrode is dipped is a solution of pH = 3.0 at 25^@C The...

    Text Solution

    |

  6. Given standard electrode potentials Fe^(2+) + 2e^(-) rarr Fe, E^@ =...

    Text Solution

    |

  7. The cell , Zn | Zn^(2+) (1M) || Cu^(2+) (1M) Cu (E("cell")^@ = 1. 10 V...

    Text Solution

    |

  8. The correct representation of Nernsts equaion is .

    Text Solution

    |

  9. Given E(Cr^(3+)//cr)^@ =- 0.72 V, E(Fe^(2+)//Fe)^@ =- 0.42 V. The pote...

    Text Solution

    |

  10. The standard reduction potential for Cu^(2+)|Cu is +0.34V. Calculate t...

    Text Solution

    |

  11. The emf of the following three galvanic cells :1. Zn//Zn^(2+) ( 1M) ||...

    Text Solution

    |

  12. Cosoder the reactopm: (T = 298 K) Cl2 (g) + 2 BR^(-) (aq) rarr 2 Cl^...

    Text Solution

    |

  13. Given below are the half -cell reactions Mn^(2+) + 2e^(-) rarr Mn, E...

    Text Solution

    |

  14. The Gibbs energy for the decomposition of Al2 O3 at 2/3 Al2O3 rarr 4/...

    Text Solution

    |

  15. Which one of the following will increase the voltage of the cell ? (T...

    Text Solution

    |

  16. The half-cell reduction potential of a hydrogen electrode at pH= 10 wi...

    Text Solution

    |

  17. Pt | Cl2 (P2) |HCl (0.M) |Pt|Cl2 (P2) , cell reaction will be spontane...

    Text Solution

    |

  18. The reduction potential of hudrogen electrode is- 118 mV. The concentr...

    Text Solution

    |

  19. The potential of the Daniell cell, Zn|(ZnSO4),((1M))||(CuSO4),((1M))...

    Text Solution

    |

  20. The EMF of the following cell : Cd(s)|CdCl(2)(0.10M)|AgCl(s)|Ag(s) i...

    Text Solution

    |