Q.

Consider the following statements which is/are incorrect :

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a

Rate constant K is equal to collision frequency ‘A’ if Ea=0

b

Rate constant K is equal to collision frequency ‘A' if  Ea=α

c

Increase in concentration of reactant increases the rate of a zero order reaction

d

Log ekvs1T is a straight line

answer is A, C, D.

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Detailed Solution

A) The rates of zero order reactions do not vary with increasing or decreasing reactants concentrations B&C) According to Arrhenius equation, K=A.e-Ea/RT if Ea=0 and then k=A.So statement C is incorrect D) The Arrhenius plot is obtained by plotting the logarithm of the rate constant (k) versus the inverse temperature (1/ T)  , results a negative sloped line.

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