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Solutions

Telangana Open School (TOSS) · Class 12 · Chemistry

Quick revision notes for Solutions — Telangana Open School (TOSS) Class 12 Chemistry. Key concepts, formulas, and definitions for last-minute revision.

48 questions35 flashcards5 concepts

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Key Topics to Revise

1

Components of a Solution

  • A solution is a homogeneous mixture of two or more substances.
  • Solute is the component that dissolves in the solvent.
  • Solvent is the component in which the solute dissolves and has the same physical state as the solution.
2

Concentration of Solutions

  • Different ways to express concentration: molarity, molality, normality, mole fraction, and mass percentage.
  • Molarity depends on volume and changes with temperature.
  • Molality is based on mass and does not change with temperature.
3

Types of Solutions and Henry's Law

  • Nine possible combinations of solute and solvent states exist, but common ones are solid in liquid, gas in liquid, and liquid in liquid.
  • Gases dissolve in liquids; solubility increases with pressure and decreases with temperature.
  • Henry’s Law: the solubility of a gas is directly proportional to its partial pressure.
4

Vapour Pressure and Raoult's Law

  • Vapour pressure is the pressure exerted by vapours in equilibrium with the liquid.
  • Raoult’s Law: partial vapour pressure of each component is proportional to its mole fraction.
  • For non-volatile solutes, vapour pressure of solution is less than pure solvent.

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Full Notes

Key Concepts

A solution consists of a soluteConcentration can be expressed in severalHenry’s Law states that the solubilityIdeal solutions follow Raoult’s Law exactlyThese are properties that depend only

Frequently Asked Questions

What are the important topics in Solutions for Telangana Open School (TOSS) Class 12 Chemistry?
Solutions covers several key topics that are frequently asked in Telangana Open School (TOSS) Class 12 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Solutions — Telangana Open School (TOSS) Class 12 Chemistry?
Understand the core concepts first, then work through the 48 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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