State whether the following are characteristics of zero-, first-, or second-orde

Question

State whether the following are characteristics of zero-, first-, or second-order kinetics for the reaction R ----> P. If there is not enough information given to determine the order of the reaction, indicate so.

Use the following key to indicate your answer:

0 = zero order 1 = first order 2 = second order N/A = insufficient information

(a) ___ The reaction rate is not affected by [R].                                                               

(b) ___ A plot of ln[R] vs. time is linear.                                                                          

(c) ___ The reaction rate increases with increasing temperature.                                      

(d) ___ A catalyst can accelerate the reaction.                                                                  

(e) ___ A plot of 1/[R] vs. time is linear.

Explanation / Answer

(a) For zero order reaction the rate of reaction is independant of concentration of reactant

So answer : Zero

(b) the first order reaction is represented by equation

time = 1/K (ln [R0/Rt]

So on ploting a graph between time and ln[R] , the graph willbe linear

Answer: first order

c) the reaction rate increases with temperature for all endothermic reaction

so answer is : NA

d) a catalyst can accelerate the reaction for all reactions

So answer is NA

e) the second order reaction is

1/[R] = 1/ [R0] + kt

So if we plot a graph between time and 1/[R] it will be a straight line

Answer: second order

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