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NCERT Solutions for Class 12 Chemistry Chapter 2 Solutions

by Anand Meena
April 22, 2019
in 12th Class
Reading Time: 4 mins read
0
NCERT Solutions

Get here NCERT Solutions for Class 12 Chemistry Chapter 2. These NCERT Solutions for Class 12 of Chemistry subject includes detailed answers of all the questions in Chapter 2 – Solutions provided in NCERT Book which is prescribed for class 12 in schools.

Book: National Council of Educational Research and Training (NCERT)
Class: 12th Class
Subject: Chemistry
Chapter: Chapter 2 – Solutions

NCERT Solutions for Class 12 Chemistry Chapter 2 Solutions

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Class XII Chemistry Chapter 2 Solutions NCERT Solution is given below.

NCERT Solutions for Class 12th Chemistry
NCERT Solutions for Class 12th Chemistry
NCERT Solutions for Class 12th Chemistry
Question 2.23:
Suggest the most important type of intermolecular attractive interaction in the following pairs.
(i) n-hexane and n-octane
(ii) I2 and CCl4
(iii) NaClO4 and water
(iv) methanol and acetone
(v) acetonitrile (CH3CN) and acetone (C3H6O).
Answer
(i) Van der Wall’s forces of attraction.
(ii) Van der Wall’s forces of attraction.
(iii) Ion-diople interaction.
(iv) Dipole-dipole interaction.
(v) Dipole-dipole interaction.

Question 2.24:
Based on solute-solvent interactions, arrange the following in order of increasing
solubility in n-octane and explain. Cyclohexane, KCl, CH3OH, CH3CN.
Answer
n-octane is a non-polar solvent. Therefore, the solubility of a non-polar solute is more than that of a polar solute in the n-octane.
The order of increasing polarity is:
Cyclohexane < CH3CN < CH3OH < KCl
Therefore, the order of increasing solubility is:
KCl < CH3OH < CH3CN < Cyclohexane

Question 2.25:
Amongst the following compounds, identify which are insoluble, partially soluble and highly soluble in water?
(i) phenol (ii) toluene (iii) formic acid
(iv) ethylene glycol (v) chloroform (vi) pentanol.
Answer
(i) Phenol (C6H5OH) has the polar group −OH and non-polar group −C6H5. Thus, phenol is partially soluble in water.
(ii) Toluene (C6H5−CH3) has no polar groups. Thus, toluene is insoluble in water.
(iii) Formic acid (HCOOH) has the polar group −OH and can form H-bond with water.
Thus, formic acid is highly soluble in water.
(iv) Ethylene glycol has polar −OH group and can form H−bond. Thus, it is highly soluble in water.
(v) Chloroform is insoluble in water.
(vi) Pentanol (C5H11OH) has polar −OH group, but it also contains a very bulky nonpolar −C5H11 group. Thus, pentanol is partially soluble in water.
NCERT Solutions for Class 12th Chemistry
NCERT Solutions for Class 12th Chemistry
NCERT Solutions for Class 12th Chemistry

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NCERT Solutions for Class 12 Chemistry All Chapters

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

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Anand Meena

Full time entrepreneur, likes to indulge in writing reviews about the latest technologies apart from helping students in career and exam related topics.

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