An ideal gas expands from volume to . This may be achieved by any of the three processes: isobaric, — Thermodynamics and Thermochemistry Chemistry Question
Question
An ideal gas expands from volume $V_1$ to $V_2$. This may be achieved by any of the three processes: isobaric, isothermal and adiabatic. Which of the following statement is not true for $\Delta E$?
Answer: B
💡 Solution & Explanation
$\Delta E$ strictly implies $\Delta U$. For adiabatic expansion, temperature drops ($\Delta E < 0$). For isothermal, it is constant ($\Delta E = 0$). For isobaric, temperature rises ($\Delta E > 0$). Therefore, stating $\Delta E$ is the greatest in the adiabatic expansion is false.
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