Thermodynamics and ThermochemistryhardMCQ SINGLE

Which of the following thermodynamic quantities are NOT state functions? (I) , (II) , (III) , (IV)Thermodynamics and Thermochemistry Chemistry Question

Question

Which of the following thermodynamic quantities are NOT state functions? (I) $q + w$, (II) $q$, (III) $w$, (IV) $H - TS$

Answer: B

💡 Solution & Explanation

By the First Law of Thermodynamics, $q+w = \Delta U$, which is a state function. The expression $H-TS$ equals the Gibbs Free Energy ($G$), which is also a state function. However, heat ($q$) and work ($w$) are path-dependent functions.

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