Home
Class 12
CHEMISTRY
One mole of ice is coverted into water a...

One mole of ice is coverted into water at 273 K. The entropies of `H_(2)O(s) and H_(2)O(l)` are 38.20 and `60.01 J mol^(-1) K^(-1)` respectively.
The enthaply change for the conversion is

A

`59.54 J mol^(-1)`

B

`5954 J mol^(-1)`

C

`595.4 J mol^(-1)`

D

`320.6 J mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B

`H_(2)O(s) hArr H_(2)O(l)`
`Delta S = S[H_(2)O(l)] - [H_(2)O(s)]`
`60.01 - 38.20`
`= 21.81 J mol^(-1)`
`Delta H = T Delta S = 21.81 xx 273`
`= 5954 J mol^(-1)`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-III)|10 Videos
  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Recent Examination Question|15 Videos
  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Recent Examination Question|15 Videos
  • THE SOLID STATE

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|11 Videos
  • UNIT TEST - 3

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|59 Videos

Similar Questions

Explore conceptually related problems

The pH of D_(2)O and H_(2)O at 298 k is

If S^(@) for H_(2), CI_(2) and HCI are 0.13 , 0.22 and 0.19 kJ K^(-1) mol^(-1) respectively. The total change in standard entropy for the reaction H_(2) + CI_(2) to 2 HCI is

If DeltaH_f^@" for " H_2O and H_2O_2 " are " -280 and -188 kJ mol^(-1) , the enthalpy change for the reaction, 2 H_2O_2 (l) to 2H_2O (l) + O_2(g) is :

Calculate standard free energy of formation of H_2O_((l)) . The standard enthalpy of formation of H_2O_((l)) is 285.85 kJ and standard entropies of H_(2(g)), O_(2(g)) and H_2O_((l)) are130.5, 205.0 and 70.3 J. K^(-1) "mole"^(-1) respectively.

MODERN PUBLICATION-THERMODYNAMICS-Multiple Choice Questions (Level-II)
  1. The maximum work obtained by an isothermal reversible expansion of 1 m...

    Text Solution

    |

  2. Which of the following salts will have maximum cooling effect when 0.5...

    Text Solution

    |

  3. One mole of ice is coverted into water at 273 K. The entropies of H(2)...

    Text Solution

    |

  4. The molar heat of vaporisation for water is 9.72 kcal mol^(-1). The am...

    Text Solution

    |

  5. Which of the following properties of a system undergoing change at a c...

    Text Solution

    |

  6. Two objects are said to be in thermal equilibrium if they have same

    Text Solution

    |

  7. An isolated system is that system in which

    Text Solution

    |

  8. For the reaction : F(2)(g) + 2HCl(g) hArr 2HF(g) + Cl(2)(g) Delta ...

    Text Solution

    |

  9. M is a metal which forms an oxide, M(2)O and (1)/(2) M(2)O(s) rarr M(s...

    Text Solution

    |

  10. A mixture of 2 moles of carbon monoxide and one mole of oxygen in a cl...

    Text Solution

    |

  11. Latent heat of vaporisation of a liquid at 500 K and 1 atm pressure is...

    Text Solution

    |

  12. At constant T and P which one of the following statements is correct f...

    Text Solution

    |

  13. If S + O(2) rarr SO(2), Delta H = -298.2 kJ SO(2) + (1)/(2) O(2) rar...

    Text Solution

    |

  14. The latent heat of vaporisation of water at 100^(@) is 2257 (kJ)/(kg)....

    Text Solution

    |

  15. If Delta H and Delta U are the changes in the enthalpy and internal en...

    Text Solution

    |

  16. One mole of methannol when burnt in oxygen gives out 723 kJ mol^(-1) h...

    Text Solution

    |

  17. S + (3)/(2)O(2) rarr SO(3) + 2x kcal SO(2) + (1)/(2) O(2) rarr SO(3)...

    Text Solution

    |

  18. The enthalpy of formation of two compounds A and B are -84 kJ and -156...

    Text Solution

    |

  19. For a reaction at equilibrium, the partial pressure of B is found to b...

    Text Solution

    |

  20. When an ideal gas is suddenly allowed to expand adiabatically into an ...

    Text Solution

    |