Q.

Quantity of work (in joules) done by the gas if it expands against a constant pressure of 0.980 atm and the change in volume (∆V) is 25.0 L, is

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a

24.5 J

b

2.48 J

c

2.48 × 103 J

d

0.0245 J

answer is C.

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Detailed Solution

Work done - p∆V=0.980 atm×25.0 L=24.5 L atm=24.5 L atm×8.314 J mol−1K−10.0821 L atm mol−1K−1=2481J=2.481×103JNote Use value of R (gas constant to convert L atm to JR=0.0821 L atm mol−1 K−1=8.314 J mol−1 K-1
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