Home
Class 11
CHEMISTRY
Assertion (A): The enthalpy of formation...

Assertion (A): The enthalpy of formation of `H_(2)O(l)` is greater than that of `H_(2)O(g)`.
Reason (R ) : Enthalpy change is negative for the condensation reaction `H_(2)O(g) rarr H_(2)O(l)`.

A

If both (A) and (R ) are correct, and (R ) is the correct explanation for (A).

B

If the both (A) and (R ) are correct, but(R ) is not a correct explanation for (A).

C

If (A) is correct, but (R ) is incorrect.

D

If (A) is incorrect, but (R ) is correct.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Interger)|10 Videos
  • THERMODYNAMICS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Fill In The Blanks)|52 Videos
  • THERMODYNAMICS

    CENGAGE CHEMISTRY ENGLISH|Exercise Exercises (Single Correct)|62 Videos
  • STOICHIOMETRY

    CENGAGE CHEMISTRY ENGLISH|Exercise Archives Subjective|33 Videos

Similar Questions

Explore conceptually related problems

The heat of formation of H_(2)O(l) is -68.0 kcal, the heat of formation of H_(2)O(g) can logically be

Assertion (A) The O-O bond length in H_(2)O_(2) is shorter than that in O_(2) . Reason (R ) H_(2)O_(2) is ionic compound.

For the process, H_(2)O(l) to H_(2)O(g)

Assertion : For the change, H_(2)O_((l))rarr H_(2)O_((s)),DeltaH=DeltaU . Reason : No enthalpy change is involved in this process.

Heat of formation of H_(2)O is -188kJ/mol and H_(2)O_(2) is -286 kJ/mol. The enthalpy change for the reaction, 2H_(2)O_(2) to 2H_(2)O+O_(2)

The enthalpies of formation of CO2(g),H2O(l) and C2H4(g) ​ are respectively −393.5,−286 and +52.3kJmol −1 . The enthalpy change for the combustion of C2H4(g) ​ is ?

Standard heat of formation of CH_(4)(g), CO_(2)(g) and H_(2)O(l) are -75, -393.5, -286 kJ respectively. Find out the change in enthalpy for the reaction. CH_(4)(g)+2O_(2)(g)rarr CO_(2)(g)+2H_(2)O(l)

In the reaction 2H_(2)(g) + O_(2)(g) rarr 2H_(2)O (l), " "Delta H = - xkJ

The change in the enthalpy of NaOH+HCl rarr NaCl+H_(2)O is called :

If DeltaH_(f)^(@) for H_(2)O_(2) and H_(2)O are -188 kJ/mole and -286 kJ/mole, what will be the enthalpy change of the reaction H_(2)O_(2) rarr H_(2)O+1/2 O_(2)

CENGAGE CHEMISTRY ENGLISH-THERMODYNAMICS-Exercises (Assertion-Reasoning)
  1. Assertion (A): The thermodynamic factor which determines the spontane...

    Text Solution

    |

  2. Assertion (A): The Joules -Thomon coefficient for an ideal gas is zer...

    Text Solution

    |

  3. Assertion (A): Enthalpy of graphite is lower than that of diamond. R...

    Text Solution

    |

  4. Assertion: The enthalpy of formation of gaseous oxygen molecules at 29...

    Text Solution

    |

  5. Assertion (A): Heat of neutralisation for both HNO(3) and HCI with NaO...

    Text Solution

    |

  6. Assertion (A): Decrease in free energy causes spontaneous reaction ...

    Text Solution

    |

  7. Many endothermic reactions that are not spontaneous at room temperatur...

    Text Solution

    |

  8. Assertion (A): The enthalpy of formation of H(2)O(l) is greater than t...

    Text Solution

    |

  9. Assertion (A): For a particular reaction, heat of combustion at consta...

    Text Solution

    |

  10. Assertion (A): The enthalpy of both graphite and diamond is taken to ...

    Text Solution

    |

  11. Assertion (A): The heat of neutralisation of perchloric acid, HCIO(4),...

    Text Solution

    |

  12. Assertion (A): The Heat of ionisation of water is equal to the heat o...

    Text Solution

    |

  13. Assertion (A): The enthalpy of formation of HCI is equal to the bond e...

    Text Solution

    |

  14. Assertion (A): Pressure, volume, and temperature are all extensive pro...

    Text Solution

    |

  15. Assertion (A): When a gas at high pressure expands against vacuum, th...

    Text Solution

    |

  16. Assertion: When a real gas is allowed to expand adiabatically through ...

    Text Solution

    |

  17. Assertion : There is no change in internal energ in a cyclic process. ...

    Text Solution

    |

  18. Assertion (A): An exothermic process, non-spontaneous at high temperat...

    Text Solution

    |

  19. Assertion (A): There is no reaction known for which DeltaG is positive...

    Text Solution

    |

  20. A reaction which is spontaneous and accompanied by decrease of randomn...

    Text Solution

    |