Boltzmann Distribution Flashcards Preview

AS Chemistry > Boltzmann Distribution > Flashcards

Flashcards in Boltzmann Distribution Deck (4)
Loading flashcards...

Boltzmann distribution

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


Temperature and the Boltzmann distribution

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


Explanation of temperature change on distribution curve

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


Explanation for catalysts and Boltzmann distribution

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