# Solutions

Chapter Rating: Do or Die (Most Important)

Topic Weightage: 0.05

## Important Concepts in Solutions

Find notes, videos, important points and questions to practice on each of these concepts.

Most Important Concepts (Do or Die)
• Concentration of Solutions

• Colligative Properties

• Osmotic Pressure

Important Concepts (Should Do)
• Ideal Liquid Solution and Raoult's Law

• Relative lowering of Vapour Pressure

• Elevation of Boiling Point

• Depression in Freezing Point

• van't Hoff Theory of Dilute Solutions

Not So Important Concepts (Do if you have time)
• Non-ideal Solutions

• Biological Importance of Osmosis

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## Important Points

Volume of solution = n1M1 + n2M2/ p ,n1 and n2 are amount of solvent and solute in solution, p is density of solution.
Morality of solution, M= amount of solute /Volume of solution in dm3
Morality of solution, m= amount of solute /mass of solvent in Kg = n2/n1M1
Mole fraction of solute =x2 = n2 /n1 + n2
A liquid solution is said to be ideal solution if its constituents follow Raoult's law.

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