Clausius-Clapeyron Equation and Phase Equilibria
Study the Clausius-Clapeyron equation and its application to phase transitions and equilibrium conditions.
Why this shows up in the exam
Phase equilibrium and related calculations are common in competitive exams.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
For vaporization of water at 1 atmospheric pressure, the values of ΔH and ΔS are 40.63 kJ mol⁻¹ and 108.8 J K⁻¹ mol⁻¹, respectively. The temperature when Gibbs' energy change (ΔG) for this transformation will be zero, is
Push further
More challenging3 harder questions built from the past papers above — a step up in difficulty, with distractors designed so you can't get there by elimination. Written and checked by our reviewers, not from a real paper.
For a hypothetical reaction A(g) ⇌ B(g), the standard enthalpy change (ΔH°) is +25 kJ mol⁻¹ and the standard entropy change (ΔS°) is +50 J K⁻¹ mol⁻¹. Assuming ΔH° and ΔS° are temperature independent, at what temperature will the equilibrium constant (K) for this reaction be equal to 1?
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