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 the Henderson-Hasselbalch Equations. This concerns the dissociation of weak acid in equilibrium. Let us consider HA, a weak acid that ionizes as follows: The above 1 no. equation is known as Henderson-Hassethalch equation. Example: In case of blood, the ratio between [BHCO3]: [H2CO3] or [B2HPO4]: [BH2PO4] can be found out by applying the [...]