Question

catalysts definition and example!?

Answer 1

catalyst definition: catalyst is chemical or a compound that afects positively on rate of reaction, it can participate in reaction but comes out unchanged
example: Pt will convert methyl alcohol vapors (CH3OH) into formaldehyde (CH2O) on contact

Answer 2

A catalyst is a substance which speeds up a reaction, but is chemically unchanged at the end of the reaction. When the reaction has finished, you would have exactly the same mass of catalyst as you had at the beginning.

You can have a detailed look here
--. http://www.chemguide.co.uk/physical/basicrates/catalyst.html

Answer 3

catalyst is a substance which increases the rate of reaction , without changing itself at the end of the reaction .
in Haber processes synthesis of ammonia from nitrogen and oxygen is catalyzed using iron oxide as catalyst

Remember catalyst alters the rate of reaction but it don't initiate the reaction .

Answer 4

example of catalyst in our body?

Answer 5

example of catalyst in our body?

Answer 6

the body contains mainly enzymesas catalyst !!!all enzyme in body catalyse certain compounds into products!!!
lipase catalyses lipids !!!pepsin which break down proteins!!!

Answer 7

@chemvijay , not sure about Fe playing a catalytic role in blood. But dead sure about Fe existing as a coordination compound

Answer 8

*@chmvijay

Answer 9

Yaa ur right it is just carrier of oxygen in body !!!!
you can neglect that\