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A gas is allowed to expand in a well ins...

A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5 atm from an initial volume of 2.50 L to a final volume of 4.50 L. the change in internal energy `DeltaU` of the gas in joules will be-

A

`1136.25 J`

B

`-500 J`

C

`-505 J`

D

`+ 505 J`

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • A gas is allowe to expandin a well insulated container against a constant external pressure of2.5 atmfrom an initial volume of2.50 Lto a final volume of 4.50 L. The change in internal energy DeltaU of thegas in Joules will be

    A
    1136.25J`
    B
    `-500J`
    C
    `-505J`
    D
    `+505J`

  • A gas expands in an insulated container against a constant external pressure of 1.5 atm from an initial volume of 1.2 L to 4.2 L. The change in internal energy ( DeltaU ) of gas is nearly (1 L-atm = 101.3 J)

    A
    `- 456 J`
    B
    `+ 456 J`
    C
    `- 402 J`
    D
    `+ 402 J`

  • An ideal gas is allowed to expand from 1L to 10 L against a constant external pressure of 1 bar. The work doen in kJ is:

    A
    `-9.0`
    B
    `+10.0`
    C
    `-0.9`
    D
    `-2.0`

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