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The work done by the system in the conve...

The work done by the system in the conversion of `1 mol` of water at `100 ^(@)C` and `760` torr to steam is `-3.1 kJ`. Calculate the `DeltaE` for the conversion (Latent heat of vaporisation of water is `40.65 kJ mol^(-1)`)

A

`43.75 kJ`

B

`101.35 kJ`

C

`37.55 kJ`

D

`-40.65 kJ`

Text Solution

Verified by Experts

The correct Answer is:
C
According to first law,
`DeltaE=q+W`
`:. DeltaE=40.65-3.1=37.55 kJ`
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DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
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  3. The work done by the system in the conversion of 1 mol of water at 100...

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  4. If DeltaH(f)(X), DeltaH(f)(Y), DeltaH(f)(R ) and DeltaH(f)(S) denote t...

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  7. One mole of a gas absorbs 200 J of heat at constant volume. Its temper...

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  8. Work done on a system when one mole of an an ideal gas at 500 K is com...

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  9. For the reversible isothermal expansion of one mole of an ideal gas at...

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  10. The latent heat of vaporisation of water at 100 ^(@)C is 540 cal g^(-1...

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  11. Given that (1)/(2)S(8)(s)+6O(2)(g)to4SO(3)(g), DeltaH^(@)=-1590 kJ T...

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  12. For the process NH(3)(g) +HCI(g) rarr NH(4)CI(s)

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  13. The enthalpy change at 298 K of the reaction H(2)O(2)(l)toH(2)O(l)+1...

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  14. If S+O(2)toSO(2),DeltaH=-298.2 " kJ" " mole"^(-1) SO(2)+(1)/(2)O(2)t...

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  15. The entropy change for the fusion of 1 mol of a solid which melts at 2...

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  16. The heat change for the following reaction at 298 K and constant press...

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  17. Which of the following equations express DeltaH as heat of combustion ...

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  18. The enthalpy of formation of ammonia is -46.0 KJ mol^(-1) . The entha...

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  19. The heat evolved in combustion of benzene is given by the following eq...

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  20. DeltaG for a reaction at 300 K is -16 kcal and DeltaH is -10 kcal. The...

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