Class 12 Chemistry simulations · Solutions

Colligative properties: boiling and freezing point

Dissolve a solute in 1 kg of water and see the boiling point rise and the freezing point fall.

Open the simulation

What to notice

The change depends on the number of solute particles, not on their kind — NaCl gives about twice the effect of glucose.

Key relation

ΔT_b = i K_b m ; ΔT_f = i K_f m ; water: K_b = 0.52, K_f = 1.86 K kg mol⁻¹

Try this

Dissolve 0.5 mol of NaCl and of glucose. Compare the freezing points.

What you can change

• Solute: choose Glucose, Urea, Sodium chloride, Calcium chloride
• Molality: 0 to 2 mol/kg

More in Solutions

• Henry’s law: gas dissolved in a liquid
• Osmosis and osmotic pressure
• Raoult’s law: vapour pressure of a mixture

See all Class 12 Chemistry simulations or every Physica simulation.