Chemical Kinetics

Calcination Examples

This article provides a thorough understanding of what calcination is and Calcination examples. Calcination is usually carried out to remove the volatile and moisture impurities present in a metal substance, usually by heating it at high temperatures with no supply of air or oxygen. Essentially, the process helps prevent crevice corrosion due to the deposition […]

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Chemical Kinetics, Chemistry, Class 11, Factors affecting reaction rates, IIT JEE

Autocatalysis

German chemist Wilhelm Ostwald introduced the concept of autocatalysis to characterise the rate of a reaction as a function of time. To understand autocatalysis, we must first understand catalysis. Catalysis is a chemical procedure in which the reaction rate is affected (usually an acceleration) by adding a substance known as a catalyst.  According to the

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Chemical Kinetics, Chemistry, Class 11, Factors affecting reaction rates, IIT JEE

Adsorption on Catalysts

In heterogeneously catalysed reactions, Langmuir explained the role of adsorption on catalysts. Contact catalysis refers to the adsorption of the reactant molecules on the catalyst surfaces. The adsorption concept of catalysis claimed that reactants in their gaseous state are adsorbed onto the surface of a solid catalyst. The pace of the reaction is accelerated by

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Chemical Kinetics, Chemistry, Class 11, Factors affecting reaction rates, IIT JEE

Activity and Selectivity of Solid Catalysts

Solid catalysts simplify the separation of catalysts from processes and provide for the potential of reusing those catalysts. Catalyst selectivity and activity are significant concepts. In nature, catalytic surfaces are usually inactive. The catalyst is activated whenever a reactant is adsorbed on its surface. This initiates the subsequent reaction process.  Solid acid catalysts are highly

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Chemical Kinetics, Chemistry, Class 11, Factors affecting reaction rates, IIT JEE

Significance of Kp and Kc in Chemical Equilibrium

Kp and Kc are equilibrium constants for ideal gas mixtures under reversible processes, and they are defined as follows: Kp is an equilibrium constant written with respect to atmospheric pressure, whereas Kc is an equilibrium constant written with respect to concentrations expressed in molarity. The Kp- Kc relationship can be deduced by first understanding what

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Chemical Kinetics, Chemistry, Class 11, IIT JEE, Rate of reaction

Rate Constant and its Units

What is the rate constant?  The constant that relates the rate of a chemical reaction at a given temperature to the concentration of reactant (in a unimolecular reaction) or the product of the concentrations of reactants is termed as rate constant. The proportionality constant in the rate law expression is known as the rate constant

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Chemical Kinetics, Chemistry, Class 11, IIT JEE, Rate of reaction

Half-life Formulas

Half-life formulas are a decent metric to calculate the half-life of radioactive elements. The need for this formula occurred when the slowed rate of decay was found during the years. When an element is reduced, its decay rate also decreases, which might be challenging to calculate after some point. In simple words, the half-life is

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Chemical Kinetics, Chemistry, Class 11, IIT JEE, Rate of reaction

Half-Life Definition

Some isotopes are radioactive and decay by a specific type of emission, whereas others are stable indefinitely. The amount of radioactivity diminishes as time passes because less and less of the radioactive isotope is present.  The half-life is a fascinating and useful aspect of radioactive decay. In these half-life definition notes, we will learn the

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Chemical Kinetics, Chemistry, Class 11, IIT JEE, Rate of reaction