Home
Class 12
CHEMISTRY
(a) Calculate Delta(r)G^(@) for the reac...

(a) Calculate `Delta_(r)G^(@)` for the reaction
`Mg(s) + Cu^(2+) (aq) to Mg^(2+) (aq) + Cu(s)`
Given: `E_("cell")^(@) = +2.71 V, 1F = 96500 C "mol"^(-1)`
(b) Name the type of cell which was used in Apollo space programme for providing electrical power.

Text Solution

Verified by Experts

(a) Apply the relation:
`Delta_(r)G^(@) =-nFE_("cell")^(@)`
Here, n =2, F = 96500 C `mol^(-1)` and `E_("cell")^(@) = 2.71 V`
Substituting the values in the equation, we have
`Delta_(r)G^(@) =-2 xx 96500 C mol^(-1) xx 2.71 V`
`=-523.03 kJ mol^(-1)`
(b) `H_(2) - O_(2)` fuel cell was used in Apollo space programme for providing electrical power.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    U-LIKE SERIES|Exercise CASE BASED/SOURCE-BASED INTEGRATED QUESTIONS (LONG ANSWER QUESTIONS-II (5 MARKS EACH))|16 Videos

  • ELECTROCHEMISTRY

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST (SECTION A) MULTIPLE CHOICE QUESTIONS (CHOOSE THE CORRECT OPTION)|7 Videos

  • ELECTROCHEMISTRY

    U-LIKE SERIES|Exercise CASE BASED/SOURCE-BASED INTEGRATED QUESTIONS (SHORT ANSWER QUESTIONS (2 MARKS EACH))|47 Videos

  • COORDINATION COMPOUNDS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST|7 Videos

  • EXAMINATION PAPER 2020

    U-LIKE SERIES|Exercise SECTION D|15 Videos

Similar Questions

Explore conceptually related problems

(a) Calculate Delta_(r)G^(@) for the reaction Mg(s)+Cu^(2)(aq)rarrMg^(2+)(aq)+Cu(s) Given : E^(@)cell=+2.71 V,1F=96500 C mol^(-1) (b) Name the type of cell which was used Apollo space programme for providing electrical power

Calculate the equilibrium costant log (K_(c)) for the reaction Zn(s)+Cu^(2+)(aq)rarrZn^(2+)(aq)+Cu(s) [Given E_(cell)^(2)=1.1 V ]

What is the Gibbs energy of the following reaction? Zn(s)+Cu^(2+) (aq) rarr Zn^(2+)(aq)+Cu^(2+) (s), E_("cell")^(@)=1.1 V

The equilibrium constant (K) for the reaction Cu(s)+2Ag^(+) (aq) rarr Cu^(2+) (aq)+2Ag(s) , will be [Given, E_(cell)^(@)=0.46 V ]

(a) Calculate Delta G^@ for the reaction Zn (s) + Cu^(2+) (aq) rarr Zn^(2+) + Cu(s) Given: E^@ for (Zn^(2+))//Zn = -0.76 V and E^@ for (Cu^(2+))//Cu = +0.34 V R= 8.314 JK^-1 mol^(-1) F= 96500 Cmol^(-1) (b) give two advantages of fuel cells.

U-LIKE SERIES-ELECTROCHEMISTRY -CASE BASED/SOURCE-BASED INTEGRATED QUESTIONS (LONG ANSWER QUESTIONS-I (3 MARKS EACH))
  1. Calcualte emf of the following at 25^(@) C Fe | Fe^(2+) (0.001) || H...

    Text Solution

    |

  2. Calculate the emf of the following cell at 25^(@) C Zn| Zn^(2+) (0.0...

    Text Solution

    |

  3. Conducitivity of 2.5 xx 10^(-4) M methonic acid is 5.25 xx 10^(-5) S c...

    Text Solution

    |

  4. (a) Calculate Delta(r)G^(@) for the reaction Mg(s) + Cu^(2+) (aq) to...

    Text Solution

    |

  5. State Kohlrausch law of independent migration of ions. Why does the co...

    Text Solution

    |

  6. Calcualte the emf of the following cell at 25^(@) C Ag(s) | Ag^(+) (...

    Text Solution

    |

  7. The electrical resistance of a column of 0.05 M NaOH solution of diame...

    Text Solution

    |

  8. Calculate the equilibrium constant K for the reaction at 298 K Zn(s)...

    Text Solution

    |

  9. For the cell Zn(s) | Zn^(2+)(2 M) ||Cu^(2+) (0.5 M) | Cu(s) (a) Wr...

    Text Solution

    |

  10. (a) Calculate the charge in coulombs required for oxidation of 2 moles...

    Text Solution

    |

  11. What is nickel-cadmium cell ? State its one merit and one demerit over...

    Text Solution

    |

  12. Give reason (a) Why does an alkaline medium inhibit the rusting of i...

    Text Solution

    |

  13. Consider the figure below and answer the following questions : (i...

    Text Solution

    |

  14. The following chemical reaction is occurring in an electrochemical cel...

    Text Solution

    |

  15. (a) A current of 1.50 amp was passed through an electrolytic cell cont...

    Text Solution

    |

  16. Calculate the emf and DeltaG of cell reaction for the following cell ...

    Text Solution

    |

  17. Calculate the standard cell potential of the galvanic cell in which th...

    Text Solution

    |

  18. a) Calculate the charge in coulombs required for the oxidation of 2 mo...

    Text Solution

    |

  19. Conductivity of 0.00241 M acetic acid is 7.896 xx 10^(-5) S cm^(-1). C...

    Text Solution

    |

  20. (i) Solutions of two electrolytes 'A' and 'B' are diluted. The limitin...

    Text Solution

    |