Catalysts

Question 1

Steps of a reaction on a solid heterogeneous catalyst?

Answer 1

1) Adsorption (molecules attach to the surface of the catalyst)
2) Bonds break forming radicals, which then get together
3) Desorption (molecules detach from the surface)

Question 2

When do you use cis/trans?

Answer 2

When the groups aren’t hydrogens

Question 3

What do E/Z or cis/trans stand for?

Answer 3

Z or cis = same side

E or trans = opposite sides

Question 4

Catalyst and conditions for ethene + hydrogen -> alkane?

Answer 4

150 degrees, nickel & high pressure

Or

25 degrees, platinum & room pressure

Question 5

Which homogenous group turns bromine water colourless? And what product is formed?

Answer 5

Alkenes

Dibromoalkane

Question 6

What is a heterogeneous catalyst?

Answer 6

A catalyst that is in a different physical state from the reactants