Question

If the slope of line for the kinetic data shown in the graph is -0.0952 and the initial concentration of reactant is 0.25 M, what is the rate of the reaction?

Graph:
.
-2.0 .
.
-3.0 .
ln[A] .
-4.0

-5.0

0 5 10 15 20

Time (seconds)




a. -2.63 s-1
b.-4.0 s-1
c.-0.024 s-1
d.-11 s-1

Answer 1

The answer is c. Rate =k[A]. This is a graph of ln[A] vs. time and it is a straight line indicating a first order reaction. In this graph, k=slope. So you can just plug in the slope for k and solve. The answer comes out to be c. I hope this helps!