Home
Class 12
CHEMISTRY
The e.m.f. of cell Zn|ZnSO(4)||CuSO(4)|C...

The e.m.f. of cell `Zn|ZnSO_(4)||CuSO_(4)|Cu` at `25^(@)C` lis `0.03 V` and the temperature coefficient of `e.m.f` is `-1.4 xx 10^(-4)V` per degree. Calculate heat of reaction for the change taking place inside the cell.

Text Solution

Verified by Experts

The correct Answer is:
`-13.842 kJ mol^(-) ;`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    P BAHADUR|Exercise Exercise (7) COMPREHENSION BASED OBJECTIVE PROBLEMS|3 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

EMF of the cell Zn ZnSO_(4)(a =0.2)||ZnSO_(4)(a_(2))|Zn is -0.0088V at 25^(@)C . Calculate the value of a_(2) .

Consider the Galvanic cell Zn^- |ZnSO_4 ||CuSO_4 +Cu^(o+) the reaction at cathode is .

The emf of a Daniell cell at 298 K is E_(1) Zn|ZnSO_(4)(0.01 M)||CuSO_(4)(1.0M)|Cu When the concentration of ZNSO_(4) is 1.0 M and that of CuSO_(4) is 0.01 M , the emf changed to E_(2) . What is the relationship between E_(1) and E(2) ?

The E^(@) values for the changes given below are measured againest NHE at 27^(@)C . Cu^(2+) + e rarr Cu^(+), E^(@) = + 0.15 V , Cu^(+) + e rarr Cu, E^(@) = + 0.50 V , Zn^(2+) + 2e rarr Zn, E^(@) = - 0.76 V The temperature coefficient of emf a cell designed as Zn"|"underset(1 M)(Zn^(2+))"||"underset(0.1 M)(Cu^(2+))"|"Cu is -1.4 xx 10^(-4)V per degree. For a cell reaction in equilibrium DeltaG = 0 and DeltaG^(@) = -2.303 RTlog_(10)K_(c) . The heat of reaction and entropy change during the reaction are are related by DeltaG = DeltaH - TDeltaS . The heat of reaction for the change Zn+underset(0.1 M)(Cu^(2+)) hArr underset(1M)(Zn^(2+))+Cu at 27^(@)C is :

The E^(@) values for the changes given below are measured againest NHE at 27^(@)C . Cu^(2+) + e rarr Cu^(+), E^(@) = + 0.15 V , Cu^(+) + e rarr Cu, E^(@) = + 0.50 V , Zn^(2+) + 2e rarr Zn, E^(@) = - 0.76 V The temperature coefficient of emf a cell designed as Zn"|"underset(1 M)(Zn^(2+))"||"underset(0.1 M)(Cu^(2+))"|"Cu is -1.4 xx 10^(-4)V per degree. For a cell reaction in equilibrium DeltaG = 0 and DeltaG^(@) = -2.303 RTlog_(10)K_(c) . The heat of reaction and entropy change during the reaction are are related by DeltaG = DeltaH - TDeltaS . Change in entropy for the reaction : Zn+underset(0.1 M)(Cu^(2+)) hArrunderset(1M)(Zn^(2+))+Cu at 27^(@)C is :

P BAHADUR-ELECTROCHEMISTRY-Exercise (9) ADVANCED NUMERICAL PROBLEMS
  1. If it is disreed to construct the following voltaic cell to have E(cel...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  5. Calculate the minimum weight of NaOH required to be added in R.H.S. t...

    Text Solution

    |

  6. Consider the cell Ag|AgBr((s)), Br^(-)||AgCl((s)), Cl^(-)|Ag at 25^(@)...

    Text Solution

    |

  7. Calculate the half cell potential of a reaction Ag(2)S + 2e rarr 2Ag +...

    Text Solution

    |

  8. The standard electrode potential are for the following reactions : F...

    Text Solution

    |

  9. The pK(SP) of Agl is 16.07. If the E^(@) value for Ag^(+)//Ag is 0.79...

    Text Solution

    |

  10. The e.m.f. of cell Zn|ZnSO(4)||CuSO(4)|Cu at 25^(@)C lis 0.03 V and th...

    Text Solution

    |

  11. For the cell Mg((s))|Mg((aq.))^(2+)||Ag((aq.))^(+)|Ag((s)), calculate ...

    Text Solution

    |

  12. The standard reduction potential of E(Bi^(3+)//Bi)^(@) and E(Cu^(2+)//...

    Text Solution

    |

  13. Show that the potentials are additive for the process in which half re...

    Text Solution

    |

  14. An alloy weighing 1.05g of Pb-Ag was dissolved in desired amount of HN...

    Text Solution

    |

  15. The following galvanic cell was Zn|{:(Zn(NO(3))(2(aq.))),(100 mL"," ...

    Text Solution

    |

  16. When silver chloride is dissolved in a large excess of ammonia, practi...

    Text Solution

    |

  17. Estimate the cell potential of a Daniel cell having 1.0 M Zn^(2+) and ...

    Text Solution

    |

  18. Calculate the e.m.f. of cell {:(Pt(H(2))),(1atm):}|{:(CH(3)COOH),(0....

    Text Solution

    |

  19. Calculate the degree of hydrolysis and hydrolysis constant of M//32 so...

    Text Solution

    |

  20. Design the cell having one of the half reaction CuS + 2e rarr Cu + S^(...

    Text Solution

    |