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Q.

What will be the value of maximum work done by the gas when pressure on 20 gm $H_{2}$ is reduced from 20 to 2 atm at constant temperature of 300 K assuming gas to behave ideally?

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a

57.44kJ

b

114.88J

c

224.478kJ

d

22.4478kJ

answer is A.

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Detailed Solution

Work done is calculated below,

$w = \frac{20}{2} \times \frac{8.314}{1000} \times 300 \ln (\frac{20}{2}) \Rightarrow w = 57.43 kJ$

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