What is a Catalysis ?its hard to understand.?

Question

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Answer 1

Catalysis is the process in which the rate of a chemical reaction is increased by means of a chemical substance known as a catalyst. Unlike other reagents that participate in the chemical reaction, a catalyst is not consumed.

A catalyst works by providing an alternative reaction pathway to the reaction product. The rate of the reaction is increased as this alternative route has a lower activation energy than the reaction route not mediated by the catalyst. The breakdown of hydrogen peroxide to give water and oxygen is a reaction that is strongly affected by catalysts:

2 H2O2 → 2 H2O + O2

This reaction is favoured in the sense that reaction products are more stable than the starting material, however the  reaction is slow. The decomposition of hydrogen peroxide is in fact so slow that hydrogen peroxide solutions are commercially available. Upon the addition of a small amount of manganese dioxide, the hydrogen peroxide rapidly reacts according to the above equation. This effect is readily seen by the effervescence of oxygen. The manganese dioxide may be recovered unchanged, and re-used indefinitely, and thus is not consumed in the reaction. Accordingly, manganese dioxide catalyses this reaction.

The production of most industrially important chemicals involves catalysis. Research into catalysis is a major field in applied science and involves many areas of chemistry, notably in organometallic chemistry and materials science. Catalysis is relevant to many aspects of environmental science, e.g. the catalytic converter in automobiles and the dynamics of the ozone hole. Catalytic reactions are preferred in environmentally friendly green chemistry due to the reduced amount of waste generated,as opposed to stoichiometric reactions in which all reactants are consumed and more side products are formed.

Answer 2

A simple meaning of catalysis is to speed up a chemical reaction by adding a component which is not actually going to impact the products of the reaction eventually

Answer 3

Every chemical reaction has a rate; and if the reaction is at equilibrium, you have two rates (forward and reverse).

A catalysis helps speed up the rate of a chemical reaction.



Hope I helped; that's essentially all it does.