Home
Class 11
CHEMISTRY
Latent heat of fusion of ice is 6 kJ mol...

Latent heat of fusion of ice is `6 kJ mol^(-1)`. Calculate the entropy change in the fusion of ice. 

Text Solution

Verified by Experts

Change in entropy, `DeltaS = q_(rev)//T`
`q_(rev)`  = Latent heat of fusion = `6 kJ mol^(-1)`
`= 6000 J mol^(-1)`
  T = Freezing point of water = 273K.
`DeltaS = 6000/(273 = 21.98 JK^(-1) mol^(-1)) (or)`
`DeltaS = (6000)/(273 xx 18) = 1.22 JK^(-1)g^(-1)`.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE- 1 (LONG ANSWER QUESTIONS)|2 Videos
  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise SUBJECTIVE EXERCISE- 1 (SHORT ANSWER QUESTIONS)|13 Videos
  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (PRACTICS SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|3 Videos
  • CHEMICAL THERMODYANMICS

    AAKASH SERIES|Exercise Questions For Descriptive Answers|28 Videos
  • ELECTRON MIGRATION EFFECTS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|10 Videos

Similar Questions

Explore conceptually related problems

At 27^(@)C latent heat of fusion of a compound is 2.7 xx 10^(3)J mol^(-1) . Calculate the entropy change during fusion

The thermodynamic property that measures the extent of molecular disorder is called entropy. The direction of a spontaneous process for which the energy is constant is always the one that increases the molecular disorder. Entropy change of phase transformation can be calculated using Trouton's formula (DeltaS= (DeltaH)/(T)) . In the reversible adiabatic process, however, DeltaS will be zero. The rise in temperature in isobaric and isochoric conditions is found to increase the randomness or entropy of the system. DeltaS= 2.303 C log (T_(1)//T_(2)), (C = C_(P) or C_(V)) The melting point of a solid is 300K and its latent heat of fusion is 600 cal mol^(-1) . The entropy change for the fusion of 1 mole of the soli (in cal K^(-1) ) at the same temperature would be:

The heats of combustion of hydrogen and cyclohexene are -241 kJ mol^(-1) and -3800 kJ mol^(-1) .The heat of hydrogenation of cyclohexene is -121kJ mol^(-1) . Calculate the heat of combustion of cyclohexane.

Heats of ionisation of acetic acid and ammonium hydroxide are x kJ mol^(-1) and y kJ mol^(-1) . Heat of neutralisation of HCl and NaOH is z kJ mol^(-1) . Calculate the heat when acetic acid is neutralised with ammonium hydroxide. (z-(x+y)kJ mol^(-1))

The latent heat of fusion of ice is 80 "cal"//g at 0^(@)C what is the freezing point of a solution of Kcl in water containing 7.45 grm of solute in 500 grm of water , assuming the salt is dissociated to the extent of 95%

The entropy change for vaporisation of a liquid is 109.3 JK^(-1)mol^(-1) . The molar heat of vaporisation of that liquid is 40.77kJ mol^(-1) . Calculate the boiling point of that liquid.

Enthalpy of vapourisation for water is 186.5 KJ "mole"^(-1) . The entropy change during vapourisation is _____ KJ "mole"^(-1)

AAKASH SERIES-CHEMICAL THERMODYNAMICS-PROBLEMS
  1. DeltaH for the formation of XY is -200 kJ mol^(-1).The bond enthalpies...

    Text Solution

    |

  2. Heats of combustion of graphite carbon and carbon monoxide are respect...

    Text Solution

    |

  3. The heat of transition of S(alpha) into S(beta) is +2.5 kJ. The heat o...

    Text Solution

    |

  4. Heats of combustion of benzene, carbon and hydrogen are - 782, -94, -6...

    Text Solution

    |

  5. The heat of formation of crystalline sodium chloride is -410 kJ mol^(-...

    Text Solution

    |

  6. The heats of formation of CO(2(g)) , H2O((l)) and CH(4(g)) are respect...

    Text Solution

    |

  7. The standard molar heat for formation of ethane, carbondioxide and wat...

    Text Solution

    |

  8. Latent heat of fusion of ice is 6 kJ mol^(-1). Calculate the entropy c...

    Text Solution

    |

  9. The entropy change for vaporisation of a liquid is 109.3 JK^(-1)mol^(-...

    Text Solution

    |

  10. Based on entropy Change predict a spontaneous reaction among the follo...

    Text Solution

    |

  11. Calculate DetlaG^(@) for the following reaction, Zn((s)) + Cu((aq))^(2...

    Text Solution

    |

  12. The equilibrium constant of a reaction is 73. Calculate standard free ...

    Text Solution

    |

  13. The reaction, H(2(g)) + 1/2O(2(g)) to H2O((l)), is spontaneous. The De...

    Text Solution

    |

  14. The standard free energy of Cu((aq))^(+)  is 50 kJ mol^(-1) and that o...

    Text Solution

    |

  15. Zn((s))+Fe(aq)^(2+) Leftrightarrow Zn(aq)^(2+) +Fe((s). The vale of K(...

    Text Solution

    |

  16. 1 g of graphite is burnt in a bomb calorimeter in excess of O(2) at 29...

    Text Solution

    |

  17. What are the sign of the entropy change (+ or -) in the following: I...

    Text Solution

    |

  18. Kp for the reaction 3/2O(2(g)) overset(rarr)(larr)O(3(g)) at 25^@C is ...

    Text Solution

    |

  19. A swimmer coming out from a pool is covered with a film of water weigh...

    Text Solution

    |

  20. Find out the value of equilibrium constant for the following reaction ...

    Text Solution

    |