Boiling Point Elevation and Freezing Point Depression
Understand how solutes elevate boiling point and depress freezing point, and how to calculate these changes using K_b and K_f.
Why this shows up in the exam
You will be asked to calculate temperature changes and relate them to solution concentration and properties.
How NEET tests this
Practise it
These are real questions from past NEET papers that test this exact idea.
At 100°C the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If Kₛ = 0.52, the boiling point of this solution will be
Push further
More challenging23 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.
An aqueous solution contains 0.1 mol of compound X and 0.1 mol of compound Y in 1 kg of water. If compound X is a non-electrolyte and compound Y is a strong electrolyte that dissociates into three ions, what is the total effective molality of solute particles in the solution?
More from Solutions
Osmotic Pressure and Its Applications
Learn the concept of osmotic pressure, its calculation, and its use in determining molar mass and understanding osmosis.
Raoult's Law and Ideal Solutions
Understand Raoult's law, its application to ideal binary solutions, and the conditions under which solutions behave ideally.
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.
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.