MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryChemical kineticsTheory of Bimolecular Gaseous Reactions
According to collision theory of reaction rates, the rate of reaction depends
A.only upon the total number of collisions per
B.only upon the colliding molecules with energy
C.upon the orientation of molecules at the time of
D.both on (b) and (c)✓ Correct
Explanation
Collision theory can be mathematically stated as x a E RT k Z Ae Where, Z ->Related to orientation A ->Frequency of collision a E RT e ->Fraction of effective collision Combining a E RT A e x gives frequency of effective collision. Thus, rate depends on frequency of effective collision & orientation of molecules at time of collision. Fraction of molecules with energy E Energy 1T 2T 2 1 T >T a E a -E RT e
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