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What is the change internal energy when...

What is the change internal energy when a gas contracts from 377 mL to 177 mL under a constant pressure of 1520 torr, while at the same time being cooled by removing 124 J heat ?
`[Take :( 1 L atm ) =101.3 J)]`

A

40.52 J

B

`-83.48 J`

C

`-248 J`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaH=DeltaU+P.DeltaV`
`implies -124 = DeltaU+(1520)/(760)xx(177-377)xx10^(-3)xx101.3`
`DeltaU=-83.48 J`
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NARENDRA AWASTHI-THERMODYNAMICS-Exercise
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  3. What is the change internal energy when a gas contracts from 377 mL ...

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  5. One mole of non- ideal gas undergoes a change of state (1.0 atm, 3.0L,...

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  6. Consider the reacting at 300K C(6)H(6)(l)+(15)/(2)O(2)(l)rarr 6CO(2)...

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  7. For the reaction , FeCO(3)(s)rarrFeO(s)+CO(2)(g),DeltaH=82.8kJ at 25^(...

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  10. Predict which of the following reaction(s) has a negative entropy chan...

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  14. Which of the following expression is known as Clausius inequality ?

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  18. When one mole of an ideal gas is compressed to half of its initial vol...

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  19. What is the change in entropy when 2.5 mole of water is heated from 27...

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  20. Calculate standard entropy change in the reaction Fe(2)O(3)(s)+3H(2)...

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