Home
Class 12
CHEMISTRY
The variation of E("cell") with temperat...

The variation of `E_("cell")` with temperature i.e., `((deltaE)/(deltaT))_(P)` is equal to :

A

`(DeltaS)/(nF)`

B

`(DeltaH-DeltaG)/(nFT)`

C

`[n(DeltaH)/(nF)]//T`

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaG = DeltaH + T ((partialDeltaG)/(partialT))` and
`DeltaG = DeltaH - TDeltaS` and `DeltaG = -nEF`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    P BAHADUR|Exercise (A) ELECTROLYSIS|2 Videos

  • ELECTROCHEMISTRY

    P BAHADUR|Exercise (B) ELECTRODE POTENTIAL AND EMF|1 Videos

  • DILUTE SOLUTION AND COLLIGATIVE PROPERTIES

    P BAHADUR|Exercise Exercise 9 Advanced Numerical|12 Videos

  • MOCK TEST PAPER

    P BAHADUR|Exercise Exercise|92 Videos

Similar Questions

Explore conceptually related problems

The variation of volume V, with temperature T, keeping pressure constant is called the coefficient of thermal expansion (alpha) of oa gas, i.e., alpha=(1)/(V)=((deltaV)/(deltaT))_(P) . For an ideal gas alpha is equal to

Statement : ((deltaE)/(deltaT))_(P) is called temperature coefficient of emf. Explanation : ((deltaE)/(deltaT))_(P) may be +ve, -ve and depends upon heat of reaction.

If DeltaG=DeltaH-TDeltaS and DeltaG = DeltaH+T[(d(DeltaG))/(dT)] , then variation EMF of a cell E, with temperature T, is given by

The cell potential (E_(cell)) of a reaction is related as /_\G=-nF E_(cell) , where /_\ G represents max. useful electrical work n=no. of moles of electrons exchanged during the section for reversible cell reaction d(/_\G)=(/_\_rV)dp-(/_\_rS),dT at constant pressure d(/_\G)=-(/_\_rS).dT :' At constant pressure /_\G=/_\H-T./_\S :. /_\G=/+\H+T(d(/_\G))/((dT)_P) ((dE_(cell))/(dT))_P is known as temperture coefficient of the e.m.f of the cell. The temperature coefficient of the e.m.f of cell, ((dE)/(dT))_P si given by:

The variation of the instantaneous current (I) and the instantaneous e.m.f (E) in a circuit is as shown in figure. Which of the following statement is correct?

Neglecting the mass variation with velocity , the ratio of the wavelength ((lamda_e)/lamda_p) associated with an electron (lamda_e) having a kinetic energy E and wavelength associated with a Photon (lamda_p) having kinetie energy 4E is

P BAHADUR-ELECTROCHEMISTRY-Exercise (9) ADVANCED NUMERICAL PROBLEMS
  1. The variation of E("cell") with temperature i.e., ((deltaE)/(deltaT))(...

    Text Solution

    |

  2. A current of 0.5 A is passed through acidulated water for 30 minute. C...

    Text Solution

    |

  3. A copper cell containing 5% solution of CuSO(4).5H(2)O and a silver ce...

    Text Solution

    |

  4. Some quantity of electricity being used to liberate iodine (at anode) ...

    Text Solution

    |

  5. A test for complete romovel of Cu^(2+) ions form a solution of Cu((aq....

    Text Solution

    |

  6. A Zn rod weighing 25g was kept in 100 mL of 1M CuSO(4) solution. After...

    Text Solution

    |

  7. Assume that impure copper contains only Fe, Au and Ag as impurities. A...

    Text Solution

    |

  8. 50 mL of 0.1 M CuSO(4) solution is electrolysed using Pt electrodes wi...

    Text Solution

    |

  9. An oxide of metal ("at. wt. "= 112) contain 12.5% O(2) by weight. The ...

    Text Solution

    |

  10. 19g fused SnCl(2) was electrolysed using inert electrodes. 0.119g Sn w...

    Text Solution

    |

  11. A lead storage cell is discharged which causes the H(2)SO(4) electroly...

    Text Solution

    |

  12. Two litre solution of a buffer mixture containing 1.0 M NaH(2)PO(4) an...

    Text Solution

    |

  13. A current of 40 microampere is passed through a solution of AgNO(3) fo...

    Text Solution

    |

  14. Suppose a fully charged battery containes 1.50 litre of 5.0 M H(2)SO(4...

    Text Solution

    |

  15. In an analytical determination of aresenic , a solution containing are...

    Text Solution

    |

  16. Assuming that a constant current is delivered, how many kW-h of electr...

    Text Solution

    |

  17. Find the e.m.f. of the following cell at 18^(@)C taking the degree of ...

    Text Solution

    |

  18. If it is disreed to construct the following voltaic cell to have E(cel...

    Text Solution

    |

  19. The e.m.f. of the obtained by combining Zn and Cu electrodes of Danie...

    Text Solution

    |

  20. Calcualte the potential of an indicator electrode versus the standard ...

    Text Solution

    |

  21. An electrode is prepared by dipping a silver strip into a solution sat...

    Text Solution

    |