Boltzmann Distribution

Question 1

Boltzmann distribution

Answer 1

Spread of molecular energies in gases
Area under curve=total no of molecules
Line does not meet x, no max energy for molecules
No molecules have 0 energy

Question 2

Temperature and the Boltzmann distribution

Answer 2

Increased average energy
Small proportion will have low energy, more have high
Stretched over greater range of energy values
Peak lower on y, further along x
Same no of molecules, same area

Question 3

Explanation of temperature change on distribution curve

Answer 3

More molecules have energy greater than/equal to AE
Larger proportion of collisions, increased r of r
Frequent collisions due to faster moving molecules due to increased KE of molecules

Question 4

Explanation for catalysts and Boltzmann distribution

Answer 4

Cat, lower AE route
Larger proportion have energy equal to/greater than CE
Increased collisions, more product formed, increase r of r