Home
Class 11
CHEMISTRY
Calculate the entropy change of process ...

Calculate the entropy change of process `H_(2)O_((l))rarrH_(2)O_((g))` at 373K. Enthalpy of vaporization of water is `40850"J Mole"^(-1)`

Text Solution

Verified by Experts

`T_("system")=273+55=328K`
`T_("surroundings")=20+273=293K`
`DeltaS_(vap)=(DeltaH_("vap"))/(T_("vap"))`
`=(40850J mol^(-1))/(373K)`
`=109.51jK^(-1)mol^(-1)`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    SURA PUBLICATION|Exercise ADDITIONAL LONG ANSWERS|12 Videos
  • SURAS. MODEL QUESTION PAPER - 2

    SURA PUBLICATION|Exercise Part - D (Answer all five questions:)|15 Videos

Similar Questions

Explore conceptually related problems

Calculate the entropy change of a process H_2O_((l)) to H_2O_((g)) at 373K. Enthalpy of vaporization of water is 40850 J "Mole"^(-1)

Calculate the entropy change of a process possessing DeltaH_(t)=2090 J mol^(-1).

Calculate the entropy change when 1 mole of ethanol is evaporated at 351 K. The molar heat of vaporization of ethanol is 39.84 kJ "mol"^(-1)

The standard enthalpies of formation of C_2H_5OH_((l)), CO_(2(g)) and H_2O_((l)) are -277 , -393.5 and -285.5 "kJ mol"^(-1) respectively . Calculate the standard enthalpy change for the reaction C_2H_5OH_((l)) +3O_(2(g)) to 2CO_(2(g)) +3H_2O_((l)) The enthalpy of formation of O_(2(g)) in the standard state is zero , by definition.

SURA PUBLICATION-THERMODYNAMICS -NUMERICAL PROBLEMS
  1. The entropy change in the conversion of water to ice at 272 k for the ...

    Text Solution

    |

  2. The heat of combustion of solid naphthalene. (C(10)H(10)) at constant ...

    Text Solution

    |

  3. Calculate the standard entropy of formation DeltaS(f)^(@) " of "CO(2((...

    Text Solution

    |

  4. The standard heat of formation of H(2)O((l)) from its elements H(2) an...

    Text Solution

    |

  5. DeltaH and DeltaS for the reaction Ag(2)O((s))rarr2Ag((s))+1/2O(2((g...

    Text Solution

    |

  6. will the reaction, I(2((g)))+H(2)S((g))rarr2HI((g))+S((s)) proceed spo...

    Text Solution

    |

  7. Calculate the standard free energy change (DeltaG^(@)) of the followin...

    Text Solution

    |

  8. Calculate the maximum % efficiency of thermal engine operating between...

    Text Solution

    |

  9. Calculate the entropy change in the system, and in the surroundings an...

    Text Solution

    |

  10. Calculate the entropy change of process H(2)O((l))rarrH(2)O((g)) at 37...

    Text Solution

    |

  11. The boiling point of water at a pressure of 50 atm is 538 K.Compare th...

    Text Solution

    |

  12. The boiling point of water at a pressure of 50 atm is 538 K.Compare th...

    Text Solution

    |

  13. From the following data. CH(4)+2O(2)rarrCO(2)+2H(2)O DeltaH^(@)=-890...

    Text Solution

    |

  14. Calculate the heat of glucose and its calorific value from following d...

    Text Solution

    |

  15. Calculate the entropy change in the engine that reacives 957.5 kJ of h...

    Text Solution

    |

  16. Calculate the entropy change of a process possessing DeltaH(t)=2090 J ...

    Text Solution

    |

  17. 250 J of work is done on the system and at the same time 100 J of heat...

    Text Solution

    |

  18. The heat of combustion of ethyl alcohol is 34,600 cals. The heat of fo...

    Text Solution

    |

  19. Calculate the change of entropy for the process , water (liq) to water...

    Text Solution

    |