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One mole of a perfect gas expands isothe...

One mole of a perfect gas expands isothermally to ten times its original volume. The change in entropy is

A

0.1 R

B

10 R

C

2 R

D

2.303 R

Text Solution

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The correct Answer is:
D
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For an ideal gas, the work of reversible expansion under isothermal condition can be calculated by using expression = -nRT ln.(V_(f))/(V_(i)) . A sample containing 1.0 mol of an ideal gas is expanded isothermally and reversible to ten times of its original volume, in two separate experiments. The expansion is carried out at 300 K and at 600 K respectively. Choose the correct option

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Knowledge Check

  • A mass of ideal gas at pressure P is expanded isothermally to four times the originl volume and then slowly compressed adiabatically to its original volume. Assuming gamma to be 1.5 , the new pressure of the gas is

    A
    0.58333333333333
    B
    P
    C
    0.66666666666667
    D
    P/2

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