• Written By Abhishek_verma
  • Last Modified 19-10-2022

NCERT Solutions Class 12 Chemistry Chapter 5: Surface Chemistry


NCERT Solutions Class 12 Chemistry Chapter 5 Surface Chemistry: Scoring good marks in Chemistry is not an easy task for many students. But, with step-wise NCERT solutions provided for each chapter question, illustrations, and explanations, students can easily master the Surface Chemistry chapter and become efficient in all the chapter concepts.

CBSE Class 12 Chapter 5 talks about adsorption, mechanism and types of adsorption, adsorption isotherms, applications of adsorption, colloids, enzyme catalysis, preparation of colloids and many more. Embibe delivers around 400+ practice questions for all the sub-topics involved in the chapter. Students must practice the in-text questions provided by Embibe to score good marks. Keep reading to access NCERT Solutions for Class 12 Chapter 5 Chemistry.

NCERT Solutions for Class 12 Chemistry Chapter 5: Important Topics

Surface Chemistry is one of the easiest topics in Class 12. While solving the problems, students will get accustomed to the problem-solving approach and can easily answer all types of questions asked. Soon, the concepts and solutions will seem interesting, and students will develop speed and accuracy in problem-solving.

All the solutions in the Surface Chemistry chapter provided by Embibe are based on the latest syllabus. Also, students can practice the solutions provided by Embibe for free and achieve good marks in the exams. Students can also find NCERT 3D Videos, NCERT Exemplars, Embibe Explainers, etc., for free at Embibe.

Check below for the list of topics included in Class 12 Chemistry Chapter 5 Surface Chemistry.

S.NoTopic Name
1Importance of Surface Chemistry
5Classification of Colloids
7Preparation of Colloidal Solutions
8Purification of Colloidal Solutions
9Properties of Colloidal Solutions
10Colloids Around Us

NCERT Solutions for Class 12 Chemistry Chapter 5: Points to Remember

Students can note down the important points to remember for NCERT Class 12 Chemistry Chapter 5 to perform well in the exams.

  • Adsorbent: The substance on the surface which adsorption takes place.
  • Adsorbate: The substance which is present in a higher concentration at the surface of adsorbent
  • Physisorption is the type of adsorption in which adsorbate is held on the surface of adsorbent by van dar Waal’s forces.
  • Chemisorption is the type of adsorption in which adsorbate is held on the surface of the adsorbent by chemical bonds.
  • Enthalpy of Adsorption: Enthalpy change accompanying the adsorbate. It is always negative.
  • Extent of Adsorption decreases with an increase in temperature and increases with an increase in pressure.
  • Adsorption Isotherm: A relationship between the extent of adsorption vs. pressure at a constant temperature.

NCERT Solutions for Class 12 Chemistry: All Chapters

Students can find the detailed NCERT Class 12 solutions for Chemistry, as mentioned below, for easy reference.

FAQs on NCERT Solutions for Class 12 Chemistry Chapter 5

Q.1: Where can I get NCERT Solutions for Class 12 Chemistry Chapter 5?
Ans: Students can get NCERT Solutions for Class 12 Chapter 5 from this page of Embibe.

Q.2: How are colloids prepared?
Ans: There are two principal ways to prepare colloids: Dispersion of large particles or droplets to the colloidal dimensions by milling, spraying, or application of shear (e.g., shaking, mixing, or high shear mixing).

Q.3: What do you mean by colloids?
: A colloid is a mixture with particles ranging between 1 and 1000 nanometres in diameter, yet they can remain evenly distributed throughout the solution. These are also known as colloidal dispersions because the substances remain dispersed and do not settle to the bottom of the container.

Q.4: What are the applications of adsorption?
Ans: Applications of adsorption are : 

  • Charcoal is used as a decolouriser as it adsorbs the colouring matter from the coloured solution of sugar. 
  • Silica gel absorbs moisture from the desiccators. 
  • Silica and alumina gels are used as adsorbents for removing moisture and for controlling the humidity of rooms. 

Q.5: What does adsorption mean?
: Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface. This process creates a film of the adsorbate on the surface of the adsorbent. Similar to surface tension, adsorption is a consequence of surface energy.

Adaptive Practice with Solutions To Help You Ace Important Topics for 12th CBSE