Chemical Thermodynamics
Maharashtra Board · Class 12 · Chemistry
Most important questions from Chemical Thermodynamics for Maharashtra Board Class 12 Chemistry board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Which of the following processes are reversible? (Select all correct answers)
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Isothermal expansion of ideal gas, Adiabatic compression, Slow heating at constant pressure
Reversible processes occur infinitely slowly with the system always in equilibrium. Free expansion and mixing are irreversible processes.
Which of the following are state functions? (Select all correct answers)
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Internal energy (U), Enthalpy (H), Entropy (S)
State functions depend only on the initial and final states, not on the path. U, H, and S are state functions, while Q and W are path functions.
The relationship between enthalpy and internal energy is given by:
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H = U + PV
Enthalpy is defined as H = U + PV, where U is internal energy, P is pressure, and V is volume.
For the reaction H₂O(s) → H₂O(l), the enthalpy change is called:
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Enthalpy of fusion
The conversion of solid to liquid at constant temperature and pressure is called fusion. The enthalpy change for this process is enthalpy of fusion.
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