Question

Rate of a general reaction $A + B \rightarrow$products can be expressed as follows on the basis of collision theory.

Rate = $Z_{AB}e^{- E_{A}/RT}$

Which of the following statements is not cor5rect for the above expression?

• A. Z is collision frequency and is equal to number of collisions per second per unit volume of the reaction mixture.
• B. $e^{- E_{a}/RT}$is the fraction of molecules with kinetic energy equal to or greater than $E_{s}$
• C. $E_{a}$ is activation energy of the reaction
• D. All the molecules which collide with one other are effective collisions

Answer 1

Answer: (D)

All the molecules which collide with one other are effective collisions

Answer 2

Only those, collisions in which molecules collide with sufficient energy called threshold energy and proper orientation are effective collisions, rest of the molecules collide and bounce back.