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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