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Q.

The work done in ergs for the reversible expansion of 1 mole of an ideal gas from a volume of 10 litres to 20 litres at 250C is

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a

-2.303 × 298 × 0.082 log 2

b

-298 × 107 × 8.31 × 2.303 log 2

c

-2.303 × 298 × 0.082 log 0.5

d

-8.31 × 107 × 298 × 2.303 log 0.5

answer is B.

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Detailed Solution

W=-2.303 nRT log V2V1 =-2.303 × 1 × 8.314 × 107 × 298 log 2010 =-298 × 107 ×8.31× 2.303 log 2
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The work done in ergs for the reversible expansion of 1 mole of an ideal gas from a volume of 10 litres to 20 litres at 250C is