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NCERT Class 12 Chemistry Chapter-wise Solutions

•  1 – The Solid State
• 2 – Solutions
• 3 – Electrochemistry
• 4 – Chemical Kinetics
• 5 – Surface Chemistry
• 6 – General Principles and Processes of Isolation of Elements
• 7 – The p-Block Elements
• 8 – The d-and f-Blocks Elements
• 9 – Coordination Compounds
• 10 – Haloalkanes and Haloarenes
• 11 – Alcohols, Phenols and Ethers
• 12 – Aldehydes, Ketones and Carboxylic Acids
• 13 – Amines
• 14 – Biomolecules
• 15 – Polymers
• 16 – Chemistry in Everyday Life

CHAPTER TWO SOLUTIONS

• 2.1 Types of Solutions
• 2.2 Expressing Concentration of Solutions
• 2.3 Solubility
• 2.4 Vapour Pressure of Liquid Solutions
• 2.5 Ideal and Non-Ideal Solutions
• 2.6 Colligative Properties and Determination of Molar Mass
• 2.7 Abnormal Molar Masses

NCERT Solutions class 12 Chemistry Solutions In text question

1. Calculate the mass percentage of benzene () and carbon tetrachloride () if 22 g of benzene is dissolved in 122 g of carbon tetrachloride.

2. Calculate the mole fraction of benzene in solution containing 30% by mass in carbon tetrachloride.

3. Calculate the molarity of each of the following solutions: (a) 30 g of . in 4.3 L of solution (b) 30 mL of 0.5 M diluted to 500 mL.

4. Calculate the mass of urea () required in making 2.5 kg of 0.25 molal aqueous solution.

5. Calculate (a)molality (b)molarity and (c)mole fraction of KI if the density of 20% (mass/mass) aqueous KI is.

6. , a toxic gas with rotten egg like smell, is used for the qualitative analysis. If the solubility of in water at STP is 0.195 m, calculate Henry’s law constant.

7. Henry’s law constant for in water is 1.67 x 108 Pa at 298 K. Calculate the quantity of in 500 mL of soda water when packed under 2.5 atm pressure at 298 K.

8. The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase.

9. Vapour pressure of pure water at 298 K is 23.8 mm Hg. 50 g of urea () is dissolved in 850 g of water. Calculate the vapour pressure of water for this solution and its relative lowering.

10. Boiling point of water at 750 mm Hg is . How much sucrose is to be added to 500 g of water such that it boils at . Molal elevation constant for water is.

11. Calculate the mass of ascorbic acid (Vitamin C,) to be dissolved in 75 g of acetic acid to lower its melting point by..

12. Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL of water at.

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 covers both organic and inorganic chemistry. Please note that CBSE has reduced the syllabus for class 12 Chemistry. So, you must check the latest syllabus of CBSE while going through the NCERT solution of any chapter given in the class 12 NCERT book.