Indicators: Definition, Characteristics and Uses! Definition: Certain dyes which can determine the hydrogen ions in a solution are said to be Indicators. Characteristics: 1. The dyes are weak acids (or, less commonly, weak bases). 2. They have the property of dissociating in solution to yield ions of different colours from the un-dissociated molecules. 3. The pH at which dissociation will [...]
In this article we will discuss about:- 1. Definition of Diffusion 2. Characteristics of Diffusion 3. Physiological Role. Definition of Diffusion: The spreading of solute molecules throughout the water molecules is called diffusion. Experiment: When a lump of sugar is added to a glass of water, the sugar gradually disappears and, ultimately, a homogeneous solution is formed automatically. This is [...]
In this article we will discuss about:- 1. Introduction to Hydrotropy 2. Definition of Hydrotropy 3. Biological Importance. Introduction to Hydrotropy: Moore and Parker (1901) studied the solvent action of 5% aqueous solution of bile salts on fatty acids (and their salts). The solubility of acids in water was less than 0.1%, in bile salt solution was 0.5% and the [...]