Chemistry - QS Study
QS Study

Homogeneous Catalysis

Homogeneous catalysis In a reaction if the catalyst is present in the same phase as the reactants, it is called a homogeneous catalyst and the......

Catalyst: Definition and Description

A catalyst is a chemical entity which by virtue of its presence in a reacting system increases or decreases the rate of the reaction, itself......

Gas-Solid Systems: Reactions Involving Several Gases

Gas-Solid Systems: Reactions Involving Several Gases When more than one reacting eases are involved in a chemical reaction, the overall rate will depend on the......

Heterogeneous Reactions in Solution

Heterogeneous Reactions in Solution Heterogeneous reactions are also known in solutions. It is a solution composed of different states of matter. Examples: The reaction between......

Autocatalysis Reactions

Autocatalysis: A single chemical reaction is said to have undergone autocatalysis, or be autocatalytic, if one of the reaction products is also a reactant and......

Gas – Solid Systems: Reactions Involving One Gas

Gas – Solid Systems: Reactions Involving One Gas The following derivation, based on Langmuir’s theory of unimolecular adsorption layer, is made on the assumptions that-......

Kinetics of Heterogeneous Reactions

Kinetics of Heterogeneous Reactions The chemical engineer regularly has to compare kinetic data for heterogeneous reactions merely and precisely in order to make practical predictions......

Radiation Chemistry

Radiation Chemistry Chemical reactions brought about by the action of α, β, γ and X-rays, by rapidly moving electrons and by high voltage discharges are......

Photosynthesis

Photosynthesis Some very important reactions take place in nature by the action of light. One such reaction is the synthesis of macromolecules in the plant......

Photosensitized Reaction

Photosensitized Reaction Photosensitization is a reaction to light that is mediated by a light-absorbing molecule, which is not the ultimate target. There are many substances......

Determination of Quantum Yield

Determination of Quantum Yield The fluorescence quantum yield is defined as the ratio of the number of photons emitted to the number of photons absorbed.......

The Laws of Photochemistry

The Laws of Photochemistry There are two basic laws of photochemistry. In 1817 Grotthus and later Draper stated that only that radiation which is absorbed......