Home
Class 12
CHEMISTRY
(i) Why is the enthalpy change for a che...

(i) Why is the enthalpy change for a chemical reaction more important than internal energy change?
(ii) What is meant by isolated system?

Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXERCISE|22 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS (HOTS) QUESTIONS|20 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise QUESTION ANSWER ZONE FOR BOARD EXAMINATION (SHORT ANSWER TYPE)|35 Videos

  • CHEMICAL KINETICS

    CHHAYA PUBLICATION|Exercise EXERCISE (NUMERICAL PROBLEMS)|37 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    CHHAYA PUBLICATION|Exercise PRACTICE SET 15|15 Videos

Similar Questions

Explore conceptually related problems

Why is the enthalphy change for a chemical reaction more important than internal energy change?

The relationship between enthalpy and internal energy change is

under what condition heat of reaction of a chemical reaction becomes equal to internal energy change?

What is meant by the entropy change of a system in a chemical reaction?

Change in internal energy of a system is

What is meant by an isolated system in thermodynamics?

Why is the internal energy of a system a state function?

Is the internal energy of a system at 25^(@)C greater or less than its internal energy at 50^(@)C ?

Why is the heat of reaction of a reaction occurring in a bomb calorimeter equal to the change in internal energy of the reaction system?

What will be the value of the change in internal energy of a process occurring in an isolated system?

CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-SOLVED WBCHSE SCANNER
  1. Which one is the correct unit of entropy-

    Text Solution

    |

  2. For the reversible reaction A =+ 2B harr C+ Heat the forward raction w...

    Text Solution

    |

  3. Which one of the following is true for a spontaneous process-

    Text Solution

    |

  4. (i) Why is the enthalpy change for a chemical reaction more important ...

    Text Solution

    |

  5. Find out the heat of formation of CH3COOH. Given that the heat of comb...

    Text Solution

    |

  6. Which one of the following relation shows spontaneity-

    Text Solution

    |

  7. For which of the following chemical equation has DeltaH=DeltaU-

    Text Solution

    |

  8. Write the definition of entropy.

    Text Solution

    |

  9. If the standard formation enthalpy of CS2, CO2 and SO2 are 117 kJ mol^...

    Text Solution

    |

  10. (i) State Hess's law. (ii) Judge the spontaneity of the following re...

    Text Solution

    |

  11. At 25^(@)C which of the following has enthalpy of formation zero-

    Text Solution

    |

  12. For which of the following reactions, DeltaS gt 0-

    Text Solution

    |

  13. Write down the statement of third law of thermodynamics.

    Text Solution

    |

  14. Heat of combustion of benzene is xJ*mol^(-1). Heat of formation of car...

    Text Solution

    |

  15. (i) State the second law of thermodynamics ono the basis of entropy. ...

    Text Solution

    |

  16. An amount of work w is done by the system and q amount of heat is supp...

    Text Solution

    |

  17. Which one of the following indicates a spontaneous process-

    Text Solution

    |

  18. What is meant by an isolated systemm in thermodynamics?

    Text Solution

    |

  19. Write SI unit of entropy.

    Text Solution

    |

  20. (i) State hess's law. (ii) For the following reaction at 298K 2X+Y...

    Text Solution

    |