Catalysts

Question 1

Lowering activation energy allows reaction to happen more often at a

Answer 1

Given temp

Question 2

Catalysts can also change the reaction mechanism by

Answer 2

Providing a different pathway for the reaction

Question 3

Different pathway for reaction is absorbed hydrogen on

Answer 3

Metal surface (strong H-H bond already broken)

Question 4

Absorbed hydrogen atoms are more reactive than Hydrogen molecule (H2) because

Answer 4

Strong H-H bind already broken

Question 5

Broken H-H (H2) bind lowers _ for most reactions of H2 on the catalyst surface

Answer 5

Energy barrier

Question 6

Catalysts are essential to many

Answer 6

Industrial processes

Question 7

Catalysts are used in making

Answer 7

Plastics

Question 8

Another type of catalyst is _

Answer 8

Acid-base catalyst

Question 9

Heterogenous (or surface) catalysts is

Answer 9

Type of catalyst

Question 10

Catalysts generally react with one or more reactant to form intermediates that

Answer 10

Subsequently give the final reaction product

Question 11

In the process of forming intermediates, the catalyst _

Answer 11

Are regenerated

Question 12

Catalysts can be categorized by either _ or _

Answer 12

Homogenous

Heterogeneous

Question 13

Homogenous catalyst’s components are dispersed in _

Answer 13

Same phase as the reactants (usually gas or liquid)

Question 14

Heterogenous catalysts have components that are not

Answer 14

In same phase

Question 15

Third category of catalysts (2)

Answer 15

Enzymes

Other biocatalysts

Question 16

SI unit for catalytic activity is the

Answer 16

Katal