Non-Ideal Solutions and Deviations from Raoult's Law
Explore positive and negative deviations from Raoult's law, their molecular basis, and the formation of azeotropes.
Why this shows up in the exam
Questions often ask you to identify and explain deviations from ideality and their consequences on solution properties.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
A solution of acetone in ethanol
Push further
More challenging2 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.
Consider a binary solution formed by mixing liquid X and liquid Y. If this solution shows positive deviation from Raoult's law, which of the following statements is true?
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Understand how solutes elevate boiling point and depress freezing point, and how to calculate these changes using K_b and K_f.
Osmotic Pressure and Its Applications
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Raoult's Law and Ideal Solutions
Understand Raoult's law, its application to ideal binary solutions, and the conditions under which solutions behave ideally.
Vapor Pressure Lowering and Raoult's Law Applications
Apply Raoult's law to calculate relative lowering of vapor pressure and relate it to solution concentration.
Thermodynamic Properties of Solutions
Study the enthalpy and volume changes during solution formation, especially for ideal and non-ideal solutions.
van't Hoff Factor and Abnormal Molar Mass
Study the van't Hoff factor (i), its calculation for electrolytes and non-electrolytes, and its effect on colligative properties and molar mass determination.