question_answer 93)

  Match the statements given in Column I and Column II.

	Column 1	Column 11
A.   B.     C.   D.   E.     F.	Catalyst alters the rate of reaction Molecularity     Second half-life of first order reaction     Energetically favorable reactions are sometimes slow Area under the Maxwell, Boltzmann curve is constant	1.Cannot be fraction or zero 2. Proper orientation is not there 3.By lowering the activation energy 4.Is same as the first 5. Total probability is one   6. Refers to the fraction of molecules with energy equal to or greater than activation energy

         

Answer:

                            A.®(3) B.® W C.® (4) D.®(6) E.®(2)   F.®(5)         1. Catalyst alters the rate of reaction by lowering activation energy. 2. Molecularity can't be fraction or zero. If molecularity is zero, then reaction is not possible. 3. Second half-life of first order reaction is same as first because half-life time is temperature independent. 4.  refers to the fraction of molecules with kinetic energy equal to or greater than activation energy. 5. Energetically favourable reactions are sometimes slow due to improper orientation of molecule cause some ineffective collision of molecules. 6. Area under the Maxwell, Boltzmann curve is constant because total probability of molecule taking part in a chemical reaction is equal to one.