how does a catalyst work in a chemical reaction>>>?

Answer 1

A substance that accelarates or slows the the rate of chemical ,but itself does not take part in a chemical reaction.The catalyst that accelarates the rate if reaction is called a positive catalyst.and vice versa is called a negative catalyst.!!

Answer 2

Catalysts produces active centers by reacting with one of the reactant which makes the other to react with that active center readily , due to this the rate of reaction increases and on complete reaction with the active molecules the process tends to come in equilibrium with the formation of the catalysts once again . But now no reacting molecule is present thus the catalysts get separated and finally we get the desired product.

Answer 3

catalysts just lower down the activation energy and provide an easy path for the products. in other words it combines with the products to make some intermediate so that chances of collision are increased, hence it usually increases the rate of reaction, in some cases it may slower it too like Hydrogen peroxide does! in some cases it may also be used to increase the yield of products so formed like in the case of manufacture of ammonia! in manufacture of ammonia it is also used as a promoter i.e. those chemical compounds which increase the reactivity of catalysts themselves!!!!! in a nut shell, catalysts have varied functions in a chemical reaction but more often they are used to alter the rate of reaction!

Answer 4

How Does A Catalyst Work

Answer 5

A catalyst is a substance that alters the rate of reaction (either speeds it up or slows it down) without undergoin any change chemically or in mass.

Answer 6

Catalyst normally increases the rate of reaction without undergoing any change.
Basically catalyst work by decraesing the threshold energy(min. amout of energy that reactant molecules should possess to get converted into the product.) of the reaction.So, the reactant molecules require less amount of activation energy to cross that barrier of threshold energy and thus increases the rate of reaction as large no. of reactant molecules utilise that alternate pathway to get converted into product.

Answer 7

a catalyst works in a way which is attractively called the lock and key mechanism...the catalyst first binds itself with one of the reactants,and mind that catalyst are reactant specific i.e they bind with only one kinda reactant according to its shape,the other rectants come to the active centre of catalyst and reacts with the bound molecule....after the rection is completed, it lets the bound product go free and comes back to its original state...thus it speeds up the reaction...

Answer 8

catalyst alters the speed of a chemical reaction but does not interfior in the reaction .

Answer 9

the catalyst doesn't participate in the reacion as a reactant but helps in lowering the activation energy of the reactants and helps in the proceeding of reaction quicker.
in case of a reversible reaction it doesn't affect the equilibrium but it helps in quick attaning of equilibrium state.

Answer 10

By definition it stays inactive(does not participate in a reason) but by its presence encourages the reaction to take place smoothly. Without it reaction does not take place.

Example platinum in Sulphuric acid making process. Also in cars you have catalytic converter to convert gases in to relatively less potent gases and water.