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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
1
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1 mole of an ideal gas is allowed to expand isothermally and reversibly at until its volume is tripled. Calculate (Give answer approximately).
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Correct option: A
9
Option A (9) is correct because the entropy change for an isothermal reversible expansion is calculated using the formula ΔS = nRln(V2/V1).
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For which of the process, ∆S is negative?
The work done by a weightless piston in causing an expansion ∆V (at constant temperature), when the opposing pressure, P is variable, is given by:
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Reason :- During phase transition work done is always negative. For the reaction, at . Hence, is