Surface Chemistry

The topic deals with the phenomenon of adsorption with its constituents adsorbate and adsorbent. It explains the nature and behaviour of enthalpy, entropy and intermolecular forces of attraction in adsorption with some examples.

This topic talks about adsorption. It can be defined as the adhesion of atoms, molecules, or ions from substances irrespective of their states of matter, to a surface. We will also learn how it differs from the term absorption.

This topic talks about the process of catalysis. We will learn in detail how in this process a chemical triggers a reaction between two other chemicals, but does not take part in the reaction itself.

This topic discusses the colloidal state. It covers the theory of classification of solute as crystalloid and colloid on the basis of the size of the particle of solute.

The concept of dispersion system is detailed here which explains the distribution of the particles. It also mentions that the two phases of the dispersion system may be in same or different states of matter.

This topic talks about how colloids can be classified based on multiple factors. Here we will learn one of the most common method of classifying colloids is by identifying the phase of the dispersed substance.

This topic explains some electrical and chemical methods used for preparation of colloidal solution with pictorial illustrations. Here, we will also discuss the process of converting a precipitate into a colloidal solution.

In this topic, we will learn the definition and importance of purifying a colloidal solution. Here, we will also discuss the process of dialysis, electro-dialysis and ultrafiltration in detail with the help of pictorial illustrations.

In this topic, we will discuss different properties of colloidal solution in detail with the help of real life observations.

In this topic, we will learn the process of protection of colloids. The gold number is used to express the protecting power of different protective colloids. The relation between gold number and protecting power is also discussed here.

This topic explains to us the nature of emulsion, which is one of the common colloids. It is a mixture of multiple liquids, which are immiscible under normal situations due to liquid-liquid phase separation.

This topic introduces the compounds which act as surfactants and gives some examples. It discusses the role of surfactants including detergents, emulsifiers and dispersants. We will also study the types of surfactants in detail.

This topic gives us a detailed picture about the colloids that are around us. Here we will understand how colloids can occur in natural environment too.