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Calculate the entropy change of a proces...

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)`

A

`120 J K^(-1) "mol"^(-1)`

B

`9.1xx10^(-3) J K^(-1) "mol"^(-1)`

C

`9.1xx10^(-4) J K^(-1) "mol"^(-1)`

D

`109.52 J K^(-1) "mol"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Enthalpy of vaporization of water is =40850 J `"mol"^(-1) `
Boiling point =373 K = `T_b`
`DeltaS=(DeltaH)/T_b=40850/373` = 109.517
`=109.52 J K^(-1) "mol"^(-1)`
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FULL MARKS-THERMODYNAMICS -Additional Questions Solved (I)
  1. Which of the following process is feasible at all temperatures?

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  2. Calculate the entropy change during the melting of one mole of ice int...

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  3. Calculate the entropy change of a process H2O((l)) to H2O((g)) at 373K...

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  4. The final temperature of an engine whose initial temperature 400 K and...

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  5. In which of the following entropy decreases?

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  6. Which of the following is a state function?

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  7. Which of the following will have highest DeltaH"vap" value?

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  8. Which of the following is not a state function?

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  9. Which of the following does not result in an increase in the entropy ?

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  10. Which of the following units represent largest amount of energy?

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  11. Which of the following is not an intensive property?

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  12. Identify the state quantity among the following

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  13. Which of the following properties is not a function of state?

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  14. Which of the following relation is true?

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  15. Which one of the following always be negative?

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  16. The bond energy depends upon

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  17. Which one is the correct unit for entropy?

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  18. Which one of the following is an example for closed system?

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  19. Statement-I: All living things are open systems. Statement-II: Beca...

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  20. Which of the following is an extensive property?

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