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प्रश्न
Calculate the work done during the expansion of 2 moles of an ideal gas from 10 dm3 to 20 dm3 at 298 K in a vacuum.
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उत्तर
Given: T = 298 K, V1 = 10 dm3, V2 = 20 dm3, n = 2, W = ?
Formula: W = −Pext.ΔV
When the gas expands in a vacuum, there is no opposing force. i.e. Pext = 0
∴ W = −Pext.ΔV
= −0 × ΔV
= 0
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