NCERT Exemplar Class 12 Chemistry Chapter 2 Solutions: Solutions
NCERT Exemplar Class 12 Chemistry Solutions Chapter 2 ‘Solutions’ prepares you for a better understanding of the topics. This chapter of NCERT Class 12 Chemistry Exemplar deals with all the various kinds of ‘solutions’ used in chemistry. The main emphasis is laid upon Henry’s law and Raoult’s law and how they determine the composition and mixture of various solutions.
This chapter also covers the various types of solutions and the difference between ideal and non-ideal solutions. There are several numerical as well about expressing the concentration of multiple solutions. Towards the end vapour pressure of liquid solution and relative lowering of vapour pressure is discussed in detail. This chapter is divided into well-thought exercises consisting of a total of 62 questions. These questions are spread over six sub exercise testing each level of difficulty.
The different sections are Multiple-choice questions (MCQ) with single correct and more than one right, Short answer(SA), Matching type, Assertion & Reason type, and Long answer(LA). NCERT Exemplar solutions class 12 assists with making this part a simple one for you by learning all the fundamentals of this chapter and their application.
Important Topics NCERT Exemplar Class 12 Chemistry Solutions Chapter 2 – Solutions
Solutions: A mixture of two or more substances is known as a solution. It consists of solvent and solute.
Solvent: The substance that is present in the most substantial quantity is known as a solvent. This is what decides the physical state of any solution.
Solute: The quantity that is present in less amount is known as solute. It gets dissolved in the solvent.
Vapour Pressure: It is the pressure exerted by vapour on any liquid or solution at any given temperature.
Henry’s law: In fluids, the separation of gas is constrained by Henry’s law. The state that the solvency of a gas in a liquid, at a given temperature, is straightforwardly relative to the fractional weight of the gas. Because of the nearness of a non-unstable solute, the fume weight of the dissolvable is brought down.
Raoult’s Law: Raoult’s law governs the bringing down of the vapour pressure of the dissolvable. The law expresses that the overall bringing down of the vapour pressure of the dissolvable over a solution and the mole part of a non-unstable solute present in the solution is equivalent. It is expressed as:
Ideal Solutions: When any solution follows Raoult’s law over the complete range of concentrations and among all temperatures, then it is known as an ideal solution. There are mainly two types of deviations that are found from Raoult’s law:
- Positive deviations
- Negative deviations
Solubility: It is the maximum amount of any substance that can be dissolved in a particular amount of solvent. It basically depends on the nature of the solute and solvent in the solution and the temperature at which they are mixed.
Colligative Properties: It is the property which depends upon the number of solute particles of any nature with respect to the total number of particles present in the solution. There are basically four colligative properties, namely- depression in freezing point, the relative lowering of vapour pressure, osmotic pressure, and elevation in the boiling point.
Exercise Discussion of NCERT Exemplar Class 12 Chemistry Solutions Chapter 2
- The first section of NCERT Exemplar Class 12 Solutions Chapter 2 has 35 questions, which are MCQs and some of which are ‘single correct answers’ while others have ‘more than one correct solution.’ These are based on finding the unit of solutions and the various components of it. Some questions are focussed on finding molality and colligative properties.
- The second section has 11 questions, from 36-46 are short answer type questions that are focussed on different laws, solubility, and a semi-permeable membrane.
- The next section is matching type and assertion & reason type question, which consists of 8 items that are based on matching solutions to its components and formulas to its name.
- The final section has 8 questions, which are long answer type questions that are based on ideal and non-ideal solutions, osmosis, and Raoult’s law.
Why Use NCERT Exemplar Class 12 Solutions for Chemistry Chapter 2 by Instasolv?
NCERT Exemplar Class 12 Solutions for Chemistry Chapter 2 – Solutions by Instasolv experts sets all the fundamental subjects with a topic-wise explanation that intends to help students with understanding the section better.
Encountering the solutions given on this page will help you in recognizing how to approach and deal with the issues of any sort and any degree of difficulty. InstaSolv’s NCERT Exemplar answers for Chapter 2 are easily accessible. These are the best examination materials you can use for your last correction.