Percentage Yield

Question 1

% yield equation:-

Answer 1

(Actual moles/theoretical moles) x100

Question 2

Atom economy equation:-

Answer 2

(Mr of useful products/total Mr of products) x100

Question 3

Boltzmann distribution curve rules:-

Answer 3

Must start at origin.
Must never touch X axis again.
Labelled with energy and molecule No.
Show activation energy (Ea) with shading and line.

Question 4

Higher temp Boltzmann curve (5):-

Answer 4

Max further to right.
Lower and flatter max.
Higher line at higher energy.
Same area under curve (same tot no. of molecules in gas sample).
Write about/label it.

Question 5

Homogeneous catalyst:-

Answer 5

Catalyst in the same phase (state of matter) as the reactants.

Question 6

Heterogeneous catalyst:-

Answer 6

Catalyst in different state to the reactants.

Question 7

Catalyst Boltzmann curve:-

Answer 7

Normal, but with shaded area at lower energy.