In order to analyse variation of rate constant with temperature Arrhenius equation is used the two parameters involved pre-exponential factor and activation energy are assumed to be constant in the theory while in reality they may vary with temperature It is further observed that Arrhenius factor is proportional to sqrt(T) and hence the equation can be restated as: k=A sqrt(T)e^(-Ea//RT) (where A' is temperature independent). However, for most of the analysis its variation is neglected Also, if activation energy is temperature dependent then Arrhenius equation does not hold true and the following equation should be used (d l n k)/(dT)=(E_(a))/(RT^(2)) where symbols have usual meaning. For a reaction where activation energy is 800 cal, by what factor will rate constant increase if Arrhenius factor is assumed to be temperature dependent and temperature is changed from 200 K to 400 K?

In order to analyse variation of rate constant with temperature Arrhen

1.	In order to analyse variation of rate constant with temperature Arrhenius equation is used the two parameters involved pre-exponential factor and activation energy are assumed to be constant in the theory while in reality they may vary with temperature It is further observed that Arrhenius factor is proportional to sqrt(T) and hence the equation can be restated as: k=A sqrt(T)e^(-Ea//RT) (where A' is temperature independent). However, for most of the analysis its variation is neglected Also, if activation energy is temperature dependent then Arrhenius equation does not hold true and the following equation should be used (d l n k)/(dT)=(E_(a))/(RT^(2)) where symbols have usual meaning. For a reaction where activation energy is 800 cal, by what factor will rate constant increase if Arrhenius factor is assumed to be temperature dependent and temperature is changed from 200 K to 400 K?
Answer» `E^(+1)` TIMES `sqrt(2)e^(+1)` times `(e^(+1))/sqrt(2)` times `sqrt(2)` times Answer :B