rate of reaction?

[ChemSiddiqui]

i need some help in that how can we explain the effect of temperature change on the rate of reaction in terms of boltzman distributions?

[Darkblade48]

Essentially, the higher temperatures will give energies more molecules, shifting them to the right of the Boltzman distribution.

[ChemSiddiqui]

i would appreciate if you tell me what basically is boltzman distribution?

 

thnx 4 the answer though, i would certainly put on my thinking cap on that 1 and figure out how exactly it shifts to the right.

 

thnx

[fredrik]

Boltzmann distribution is statistical distribution of energies. Temperature just represents the statistical average energy of the molecules in a sample. Boltzmann distribution considers how large % of the population that has other energies, lower or higer.

 

Here are a couple of related links

 

http://en.wikipedia.org/wiki/Maxwell-Boltzmann_distribution

http://www.chemguide.co.uk/physical/basicrates/introduction.html#top

 

/Fredrik

[fredrik]

Higher temperature implies that a large % of the molecules have sufficient energy to exceed the activation energy, thus speeding the overall reaction rate.

 

How the equilibrium point reacts to temperature though, is a different story than kinetics.

 

/Fredrik

[ChemSiddiqui]

fedrik thnx 4 that i think i have almost got the concept and my answer as well which was the effect of temperature change on reaction rate in terms of boltzman distribution.