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NEET UG CHEMISTRY MCQ: THERMODYNAMICS
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In which of the following condition a chemical reaction can not occur?
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Correct option: C
∆H increase and ∆S decreases
Option C (∆H increase and ∆S decreases) is correct because it leads to a positive ∆G at all temperatures, making the reaction non-spontaneous.
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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