Kaplan Chemistry: Chapter 5 Chemical Kinetics

Question 1

-G is an ___ reaction

+G is an ___ reaction

Answer 1

-G = exergonic
\+G = endergonic

Question 2

T/F: temperature affects delta G

Answer 2

false. it’ll affect the reaction rate, but it won’t change whether or not the reaction is spontaneous.

Question 3

4 factors that affect reaction rate but DOES NOT change the overall delta G

Answer 3

1) reaction concentrations
2) temperature
3) medium
4) catalysts/enzymes

Question 4

units of rate

Answer 4

mol/Ls or M/s

Question 5

for a rate of a reversible reaction, Keq =

Answer 5

k/K-1

k= fwd reaction  rate constant
k-1 = rev reaction rate constant

Question 6

rate equation for a 0 order. what shape does it take on a conc. vs time graph?

Answer 6

rate = k
- rate is not dependent on any chemical
LINEAR SHAPE on conc. vs time graph.

Question 7

rate equation for a first order reaction. what shape does it take on a conc. vs time graph?

Answer 7

rate = k[A]

-takes a negative LOG shape on a conc. vs time graph.

Question 8

rate equation for a 2nd order reaction. what shape does it take on a conc. vs time graph?

Answer 8

rate = k[A]^2

- takes a super negative LOG shape on a conc. vs time graph.

Question 9

what order is the rate of radioactive decay?

Answer 9

[A]t = [A0]e^(kt)
e = 2.7