Home
Class 12
CHEMISTRY
The standard emf of the cell. Cd(s) | ...

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:

A

`167.26 kJ//mol`

B

`-167.26 kJ//mol`

C

`40 K//mol`

D

`-40 K cal//mol`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTRO CHEMISTRY

    NARAYNA|Exercise SUBJECTIVE QUESTIONS|48 Videos

  • ELECTRO CHEMISTRY

    NARAYNA|Exercise LEVEL-V|67 Videos

  • 15TH GROUP ELEMENTS

    NARAYNA|Exercise EXERCISE - 4 (NCERT EXEMPLERS/HOTs)|27 Videos

Similar Questions

Explore conceptually related problems

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 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

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 potential for the reaction, Cl_(2)(g) + 2Br^(-)(aq) rightarrow Br_(2)(l) + 2Cl^(-)(aq) is 0.283 volts. What is the equilibrium consant for this reaction at 25^(@) C?

Given the equilibrium constant : K_(c) of the reaction : Cu(s) + 2Ag^(+)(aq) rightarrow Cu^(2+) (Aq) + 2Ag(s) is 10xx10^(15) , calculate the E_(cell)^(@) of this reaction at 298K . ([2.303 (RT)/(Ft) at 298K = 0.059V])

Use the standard reduction potentials: Sn^(2+)(aq) + 2e^(-) rightarrow Sn(s) E^(@) = -0.141V Ag^(+)(aq) + e^(-) rightarrow Ag(s) E^(@) = 0.800V To calcultate E^(@) for the reaction: Sn(s) + 2Ag^(+)(aq) rightarrow Sn^(2+)(aq) + 2Ag(s)

NARAYNA- ELECTRO CHEMISTRY-LEVEL-VI
  1. A hydrogen electrode X was placed in a buffer solution of sodium aceta...

    Text Solution

    |

  2. An saturated solution in AgA (K(sp) = 3 xx 10^(-14)) and AgB(K(sp) = 1...

    Text Solution

    |

  3. The standard emf of the cell. Cd(s) | CdCl(2) (aq) rightarrow 2Ag(s)...

    Text Solution

    |

  4. The standard electrode potentials, E(I(2)//I^(-))^(@), E(Br^(-)//Br(2)...

    Text Solution

    |

  5. In which of the following (E("cell")-E("cell")^(@))=0

    Text Solution

    |

  6. Select the correct statements if 9.65 A current is passed for 1 hour t...

    Text Solution

    |

  7. The electolysis of acetate solution produces ethane according to react...

    Text Solution

    |

  8. 100ml of 0.05M CuSO(4)("aq") solution was electrolysed using inert ele...

    Text Solution

    |

  9. What is the potential of an electrode which originally contained 0.1 M...

    Text Solution

    |

  10. E^(@) in the given diagram is

    Text Solution

    |

  11. Cr(2)O(7)^(-2)+14H^(+)+6Fe^(+2)rarr2Cr^(+3)+6Fe^(+3)+7H(2)O Given : ...

    Text Solution

    |

  12. During the working of the following cell Pb-Hg(1M)|Pb^(2+)(aq)(0.1M)...

    Text Solution

    |

  13. A standard solution of KNO(3) is used to make salt bridge, because

    Text Solution

    |

  14. For the calomel half-cell, Hg, Hg(2)Cl(2)|Cl^(-)(aq) values of electro...

    Text Solution

    |

  15. At what [Br^(-)]/sqrt(CO(3)^(2-)] does the following cell have its rea...

    Text Solution

    |

  16. Calcualte the EMF of the cell at 298K Pt|H(2)(1atm) | NaOH(xM), Na...

    Text Solution

    |

  17. When a galvanic cell starts operating, with passage of time,

    Text Solution

    |

  18. Rusting on the surface of iron involves :

    Text Solution

    |

  19. Select the correct statement(s) regarding refrence electrodes

    Text Solution

    |

  20. Indicate the correct statements :

    Text Solution

    |