InterviewSolution
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InterviewSolution
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`1mol` of an ideal gas at `400K` and `10atm` is allowed to expand, adiabatically, against `2.0atm` external pressure. Find the final temperature of the gas. [Use: `C_(v) = (5)/(2)R]` |
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Answer» Assume `P_(2) = P_(ex)` and use `T_(2) = [(C_(v)+((P_(ex))/(P_(1)))R)/(C_(v)+R)]T_(1)` `rArr T_(2) = [((5)/(2)R+(2)/(10)R)/((5)/(2)R+R)]xx400K` `= [(2.7R)/(3.5R)] xx400K = 308.6K` |
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