Section 17.3
Reaction Rate Laws
Practice Test
1.
The exponents in a rate-law expression define the __________, which describes how the rate is affected by the concentration of the reactant.
SC.A.1.4.4
a.
instantaneous rate
b.
concentration
c.
specific rate constant
d.
reaction order
Hint
2.
In the rate-law expression, Rate =
k
A
, what does the symbol
k
represent?
a.
specific rate constant
b.
instantaneous rate
c.
reaction order
d.
concentration
Hint
3.
What is the most common experimental method for evaluating a reaction order called?
SC.H.1.4.1
a.
method of experimental rates
b.
method of initial rates
c.
method of final rates
d.
method of instantaneous rates
Hint
4.
The rate law for the reaction between nitrogen monoxide and hydrogen is Rate = k
NO
2
2
H
2
. What happens to the rate if the concentration of nitrogen doubles?
SC.A.1.4.4
a.
The rate doubles.
b.
The rate triples.
c.
The rate is reduced by half.
d.
The rate quadruples.
Hint
5.
How are the rate law and the order for a complex reaction determined?
SC.H.1.4.1
a.
by trial and error
b.
by calculation
c.
by estimation
d.
by experimentation
Hint
6.
What is the reaction order for each reactant in the following rate-law expression? Rate = k
A
B
2
C
3
a.
first order for A, second order for B, second order for C
b.
first order for A, second order for B, first order for C
c.
first order for A, first order for B, first order for C
d.
first order for A, second order for B, third order for C
Hint
7.
What is the overall reaction order for the following rate-law expression? Rate = k
A
B
2
C
3
a.
7
b.
6
c.
4
d.
5
Hint
