Ch 5: Chemical Kinetics

Question 1

increasing the ____ will increase reaction rate (except for zero-order reactions) because there are more effective collisions per time

Answer 1

concentration of reaction

Question 2

increasing the temperature will ____ the reaction rate because the particles kinetic energy is increased

Answer 2

increased

Question 3

changing the medium can increase or decrease reaction rate depending on

Answer 3

how the reactants interact with the medium

Question 4

adding a catalyst ____ reaction rate because

Answer 4

increases

lowers activation energy

Question 5

rate orders

Answer 5

usually do not match stoichiometric coefficents

Question 6

rate laws must be determined by

Answer 6

experimental data

Question 7

rate order is

Answer 7

sum of all individual rate orders in the rate law

Question 8

zero-order reactions have _______
can only be affected by ____
conc vs time curve is _____ with a slope of ___

Answer 8

constant rate that does not depend on the concentration of reactant

temperature or a catalyst

straight line ; -k

Question 9

first-order reactions have ____
conc vs. time is ___
slope of a ____ is -k

Answer 9

nonconstant rate that depends on the concentration of the reactant

nonlinear

ln [A] vs time plot

Question 10

second-order reactions have ___
conc vs. time curve is ___
the slope of ____ is k

Answer 10

nonconstant rate that depends on the concentration of the reactant

nonlinear

1/ [A] vs time plot

Question 11

broken-order reactions

Answer 11

those with noninteger orders

Question 12

mixed-order reactions

Answer 12

those that have a rate order that changes over time