Home
Class 12
CHEMISTRY
For the hypothetical reaction A(2)(g) +...

For the hypothetical reaction `A_(2)(g) + B_(2)(g) hArr 2AB(g)`
If `Delta_(r)G^(@)` and `Delta_(r)S^(@)` are `20 JK^(-1)mol^(-1)` respectively at `200` K.
`Delta_(r)C_(p)` is `20 JK^(-1) mol^(-1)` then `Delta_(r)H^(@) "at" 400 K ` is :

A

20 kJ/mol

B

7.98 kJ/mol

C

28 kJ/mol

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
20 kJ/mol
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS|10 Videos

  • THERMODYNAMICS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS|10 Videos

  • THE SOLID STATE

    PHYSICS WALLAH|Exercise NEET PAST 10 YEARS QUETSIONS|8 Videos

Similar Questions

Explore conceptually related problems

For the hypothetical reaction A_(2)(g)+B_(2)(g) to 2AB_(g) DeltaG_(r)^(@)" and " DeltaS_(r)^(@)" are " 20KJ//moland-20JK^(-1)mol^(-1) "respectively at" 200K Delta_(r)C_(r)" is "JK^(-1) " then " DeltaH_(r)^(@) "at" 400K is

For the reation at 300 K A(g)hArrV(g)+S(g) Delta_(r)H^(@)=-kJ//mol, Delta_(r)S^(@)=-0.1K^(-1).mol^(-1) What is the value of equilibrium constant ?

For the reaction at 300K A(g) hArr V(g)+S(g) Delta_(r) H^(@)=-30kJ //mol , Delta_(r)S^(@)=-0.1Kj.k^(-1).mol^(-1) What is the value of equilibrium constant ?

For the reaction: CO(g) +H_(2)O(g) hArr CO_(2)(g) +H_(2)(g) (Delta_(r)H)_(300K) = 41.2 kJ mol^(-1) (Delta_(r)H)_(1200K) =- 33.0 kJ mol^(-1) (Delta_(r)S)_(300K) = -4.2 xx 10^(-2) kJ mol^(-1) (Delta_(r)S)_(1200K) =- 3.0 xx10^(-2) kJ mol^(-1) Predict the direction of spontaneity of the reaction at 300K and 1200K . also calculated log_(10)K_(p) at 300K and 1200K .

For the reaction A(g) +B_2(g)rarr AB_2(g) , DeltaS=110JK^(-1) mol^(-1) , DeltaH=55KJ mol respectively Reaction will be spontanuos at

For the reaction, A(g) + B_2(g) rarr AB_2(g), delta S = 110 JK^(-1) mol^(-1), delta H = 55 kg/mol. Reaction will be spontaneous at

For a hypothetical reaction A(g) + 3B(g) to 2C(g). Delta H = -100 kJ and Delta S = -200 Jk^(-1) . Then the temperature at which the reaction will be in equilibrium is

PHYSICS WALLAH-THERMODYNAMICS-LEVEL- 2
  1. An ideal gas receives 10J of heat in a reversible isothermal expansion...

    Text Solution

    |

  2. As per the First Law of thermodynamics, which of the following stateme...

    Text Solution

    |

  3. For the reaction, CO(g) +1//2O(2)(g) to CO(2)(g)

    Text Solution

    |

  4. Heat exchanged in a chemical reaction at constant temperature and pres...

    Text Solution

    |

  5. The relation of internal energy, enthalpy and work done can be represe...

    Text Solution

    |

  6. The internal energy of a substance:

    Text Solution

    |

  7. A gas expands isothermally against a constant external pressure of 1 a...

    Text Solution

    |

  8. For the real gases reaction, 2CO(g)+O(2)(g)to2CO(2)(g),DeltaH=-560 k...

    Text Solution

    |

  9. Intermixing of ideal gases ( at the same temperature example of :

    Text Solution

    |

  10. Based on the first law of thermodynamics, which one of the following i...

    Text Solution

    |

  11. The difference between DeltaH and DeltaE on a molar basis for the comb...

    Text Solution

    |

  12. The enthalpy of combustion of C(6)H(6) is- 3250 kJ when 0.39g of C(6)H...

    Text Solution

    |

  13. If heat of dissocitation of CHCl(2)COOH is 0.7 kcal/mole then Delta H ...

    Text Solution

    |

  14. One mole of an ideal gas (C(v,m)=(5)/(2)R) at 300 K and 5 atm is expan...

    Text Solution

    |

  15. If DeltaG=-177 kcal for " "(1)2Fe(s)+(3)/(2)O(2)t...

    Text Solution

    |

  16. A certain quantity of water is kept in freezer maintained at the freez...

    Text Solution

    |

  17. Given the following reaction : P : N(2)(g)+2O(2)(g)to2NO(2)(g),Delta...

    Text Solution

    |

  18. For the hypothetical reaction A(2)(g) + B(2)(g) hArr 2AB(g) If Delt...

    Text Solution

    |

  19. In an endothermic reaction, the value of DeltaH is

    Text Solution

    |

  20. If DeltaE is the heat of reaction for C(2)H(5)OH (l)+3O(2)(g) to 2CO(2...

    Text Solution

    |