Home
Class 12
CHEMISTRY
An endothermic reaction has a positive i...

An endothermic reaction has a positive internal energy change `DeltaU`. In such a case, what is the minimum value that activation energy can have ?

A

`DeltaU`

B

`DeltaU=DeltaH+DeltanRT`

C

`DeltaU=DeltaH-DeltanRT`

D

`DeltaU=E_(a)+RT`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Additional Numerical Problems For Practice|16 Videos
  • CHEMISTRY IN EVERY DAY LIFE

    DINESH PUBLICATION|Exercise Unit test-9|50 Videos

Similar Questions

Explore conceptually related problems

Can a reaction have negative activation energy?

An endothermic reaction, Ararr B have an activation energy 15 kcal//mol and the heat of the reaction is 5 kcal//mol . The activation energy of the reaction, Brarr A is:

Can a reaction have zero activation energy ?

Can a reaction have negative or zero activation energy ?

An exothermic reaction X to Y has an activation energy 30 KJ "mol"^(-1) . If energy change DeltaE during the reaction is -20 KJ, then the activation energy for the reverse reaction in KJ is __________ . (Integer answer)

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. Calculate the work invoved when 1 mol of an ideal gas is compressed r...

    Text Solution

    |

  2. The enthalpy of neutralization of oxitic acid by strong acid is 25.4 k...

    Text Solution

    |

  3. An endothermic reaction has a positive internal energy change DeltaU. ...

    Text Solution

    |

  4. The reaction A to B , DeltaH=+24 kJ//"mole". For the reaction B to C, ...

    Text Solution

    |

  5. For a chemical reaction, DeltaG will always be negative if,

    Text Solution

    |

  6. In which reaction there will be increase in entropy ?

    Text Solution

    |

  7. A chemical reaction cannot occur at all if its

    Text Solution

    |

  8. Rate of a reaction can be expressed by Arrhenius equation as: k = Ae...

    Text Solution

    |

  9. BaSO(4) is insoluble in water due to its

    Text Solution

    |

  10. Given that Deltah(f)(H)=218 kJ//mol. Express the H-H bond energy in K ...

    Text Solution

    |

  11. Calculate DeltaH^(@) for the reaction Na(2)O(g)+SO(3)(g)toNa(2)SO(4)...

    Text Solution

    |

  12. For the reaction N(2)(g)+3H(2)(g)to2NH(3)(g), which of the following...

    Text Solution

    |

  13. Given that dE=TdS-PdV and H=E+PV, which one of the following relations...

    Text Solution

    |

  14. The activation energies of two reactions are E(1) & E(2) with E(1)gtE(...

    Text Solution

    |

  15. A reaction cannot take place spontaneously at any temperture when

    Text Solution

    |

  16. The heat of atomisation of PH(3)(g) and P(2)H(4)(g) are 954 kJ mol^(-1...

    Text Solution

    |

  17. NH(3)(g)+3Cl(2)toNCl(3)(g)+3HCl(g),DeltaH(1) N(2)(g)+3H(2)(g)to2NH(3...

    Text Solution

    |

  18. If 1 mole of an ideal gas expands isothermally at 37^(@)C from 15 litr...

    Text Solution

    |

  19. The heat liberated when 1.89 g of benzoic acid is burnt in a bomb calo...

    Text Solution

    |

  20. The source of energy in a cellular reaction is

    Text Solution

    |