Catalysts

Question 1

How does a catalyst speed up the rate of reaction?

Answer 1

By providing a lower energy pathway- decreases the activation energy for a certain reaction

Question 2

What happens during cracking?

Answer 2

Longer chains hydrocarbons are broken into shorter chained alkanes and alkenes by heating with zeolites

Question 3

What is hydrogenation?

Answer 3

A process where vegetable oil is converted into margarine by adding hydrogen in the presence of a nickel catalyst

Question 4

What process is used to make ammonia?

Answer 4

Haber process
Gaseous nitrogen and hydrogen are reacted together to form ammmonia with a catalyst of solid iron

Question 5

What are the 2 types of catalyst?

Answer 5

Homogenous and heterogenous

Question 6

What is homogenous catalysts?

Answer 6

The catalyst is in the same state (phase) as the reactants
The intermediate then breaks down to give the product and regenerates the catalyst

Question 7

What is heterogenous catalysts?

Answer 7

The catalyst is in a different phase from the reactants

Question 8

What is the contact process?

Answer 8

An industrial reaction where sulfur is oxidised and the product undergoes hydrolysis to form sulfuric acid

Question 9

What catalyst is used during the contact process?