NCERT Solutions for class 12 Chemistry Chapter 2: Solutions

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NCERT Solutions for class 12 chemistry chapter 2: Solutions are provided in this article which includes important formulas, chemical equations and numericals. Some of the important topics of Class 12 Chemistry Chapter 2 Solutions include:

Expected No. of questions: 2 to 4 questions of 1 to 5 marks

Download PDF: NCERT Solutions for Class 12 Chemistry Chapter 2 pdf

NCERT Solutions for Class 12 Chemistry Chapter 2

The NCERT solutions for class 12 chemistry chapter 2: Solutions is given below in pdf as well as image form.

NCERT Solutions for Class 12 Chemistry Chapter 2: Solutions – Important Topics

A Solution is a homogeneous mixture of two or more chemically non-reacting substances whose composition can be varied within certain limits. A solution is regarded as a simple phase having more than one component.

Types of Solutions: Based on the states of matter, solutions can be divided into solid solutions, liquid solutions and gaseous solutions.

Solid Solutions: The solvent is in solid state

Liquid Solutions: The solvent is in liquid state

Gaseous Solutions: The solvent is in gaseous state

Solubility: The amount of solute that can dissolve in a solvent to form a solution is called solubility. Solubility depends on factors like temperature, pressure, nature of solvent and solute.

Unsaturated Solution: A solution in which more solute can be added at a given temperature.

Saturated Solution: A solution in which no more solute can be added at a given temperature.

Supersaturated solution: A solution in which more solute than the limited amount is present at a given temperature.

Concentration of Solution: The ratio of the solute to the solvent is known as concentration of a solution

Henry’s Law: Henry’s Law states that the partial pressure (p) of the gas in the vapour phase is proportional to the mole fraction (x) of the gas in the solution. Mathematically,

p = K_H. x

Raoult’s Law: Raoult’s Law states that the Partial vapour pressure of every component in a solution is directly proportional to the mole fraction of that component. Mathematically,

P = P₀X

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CBSE CLASS XII Related Questions

1.
Calculate the freezing point of a solution when 10.5 g of MgBr$_2$ was dissolved in 250 g of water, assuming MgBr$_2$ undergoes complete dissociation. Given: \[ \text{Molar mass of MgBr}_2 = 184 \, g\,mol^{-1} \] \[ K_f \text{ for water} = 1.86 \, K\,kg\,mol^{-1} \] (ii) Write two differences between ideal and non-ideal solutions.

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2.
How much charge in faraday is required for the reduction of 1 mol of Ag$^+$ to Ag?

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3.
The following reactions occur at the anode during the electrolysis of aqueous sodium chloride solution: \[ Cl^-_{(aq)} \rightarrow \frac{1}{2}Cl_2(g)+e^- \qquad E^\circ_{\text{cell}}=1.36\,V \] \[ 2H_2O(l) \rightarrow O_2(g)+4H^+(aq)+4e^- \qquad E^\circ_{\text{cell}}=1.23\,V \] Which reaction is feasible at the anode and why?

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4.
A solution is prepared by dissolving 0.025 g of potassium sulphate in 2 L of water at 27$^\circ$C. Assuming potassium sulphate is completely dissociated, determine its osmotic pressure. Given: \[ R=0.082 \, L\,atm\,K^{-1}mol^{-1} \] \[ \text{Molar mass of }K_2SO_4=174\,g\,mol^{-1} \] (ii) What type of azeotrope will be formed by a solution of acetone and chloroform? Give reason.

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5.
Why second ionization enthalpies of chromium and copper are exceptionally higher than those of their neighbouring elements?

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6.
(I) Why do transition metals show variable oxidation states? (II) Out of Mn$^{2+}$ and Ti$^{2+}$ which will be more paramagnetic and why? Atomic No.: Ti = 22, Mn = 25 (III) Which ion is the strongest oxidising agent in the options given below: \[ Cr^{3+},\ V^{3+},\ Mn^{3+} \] Atomic No.: Cr = 24, V = 23, Mn = 25 (ii) Complete and balance the following equations: (I) \[ 2MnO_2+4KOH+O_2\rightarrow ? \] (II) \[ 5C_2O_4^{2-}+2MnO_4^-+16H^+\rightarrow ? \]

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NCERT Solutions for class 12 Chemistry Chapter 2: Solutions

Download PDF: NCERT Solutions for Class 12 Chemistry Chapter 2 pdf

NCERT Solutions for Class 12 Chemistry Chapter 2

NCERT Solutions for Class 12 Chemistry Chapter 2: Solutions – Important Topics

CBSE CLASS XII Related Questions

2.
How much charge in faraday is required for the reduction of 1 mol of Ag$^+$ to Ag?

5.
Why second ionization enthalpies of chromium and copper are exceptionally higher than those of their neighbouring elements?

Similar Chemistry Concepts

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NCERT Solutions for class 12 Chemistry Chapter 2: Solutions

Download PDF: NCERT Solutions for Class 12 Chemistry Chapter 2 pdf

NCERT Solutions for Class 12 Chemistry Chapter 2

NCERT Solutions for Class 12 Chemistry Chapter 2: Solutions – Important Topics

CBSE CLASS XII Related Questions

2.How much charge in faraday is required for the reduction of 1 mol of Ag$^+$ to Ag?

5.Why second ionization enthalpies of chromium and copper are exceptionally higher than those of their neighbouring elements?

Similar Chemistry Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
How much charge in faraday is required for the reduction of 1 mol of Ag$^+$ to Ag?

5.
Why second ionization enthalpies of chromium and copper are exceptionally higher than those of their neighbouring elements?