Solution: A reaction originally has 0.37 M of a reactant and after 75 seconds there are 0.15 M of the same reactant present.  A plot of the inverse of concentration (1/[A]) versus time results in a straight-line.  What is the rate constant for this reaction? A.  0.0029               B.  0.012           C.  0.053             D.  0.12           E.  18

Problem

A reaction originally has 0.37 M of a reactant and after 75 seconds there are 0.15 M of the same reactant present.  A plot of the inverse of concentration (1/[A]) versus time results in a straight-line.  What is the rate constant for this reaction?

A.  0.0029              

B.  0.012          

C.  0.053            

D.  0.12          

E.  18