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Q.

At 27°C, one mole of an ideal gas compressed isothermally and reversibly from a pressure of 2 atm to 1.0 atm, Choose the correct option from the following

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a

Change in internal energy is positive

b

Work done is –965.84 cal

c

All are incorrect

d

Heat is negative

answer is B.

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Detailed Solution

w = - 2.303 nRTlogPiPf

w = - 2.303 x 1x 2 x log12

w = 1 .386 cal

∆E =q + w = 0

q = - w = -1.386 cal

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