Review Kinetics and
Equilibrium Test
Which will occur if a catalyst is
added to a rxn mixture?
1.
2.
3.
4.
Only the rate of the reverse reaction will
increase
Only the rate of the forward reaction will
increase
The energy change of the rxn (ΔH) will
be decreased
The activation energy will be changed
Draw a PE vs. Rxn mechanism
graph that shows an exothermic
reaction
Label the:




PEreactants
PEproducts
Activated complex
ΔH
According to Reference Table I
the greatest amount of energy
would be given up by the complete
oxidation of 1 mole of:
1.
2.
3.
4.
C6H12O6 (s)
C3H8 (g)
CH3OH (l)
CH4 (g)
ΔH
In a chemical rxn, the difference b/t
the PE of the products and the PE
of the reactants is called what?
Given the below rxn, which choice
will cause less CH3COO1.
2.
3.
4.
Na+
H3O+
OHCl-
CH3COOH + H2O  H3O+ + CH3COO-
Which equilibrium constant
indicates an equilibrium mixture
that favors the formation of
products?
1.
2.
3.
4.
Keq=
Keq=
Keq=
Keq=
1
1
1
1
x
x
x
x
10-5
10-1
105
100
What is the equilibrium expression
for the rxn:
4Al (s) + 3O2(g)  2Al2O3 (s)
What is the correct equilibrium
expression for:
2CO (g) + O2 (g)  2CO2
Heat
of products
The
heatcontent
of reaction
is defined as
– Heat what?
content of
reactants
At temperatures above 0oC which
phase change occurs?
1.
2.
3.
4.
H2O(s)  H2O(l),
spontaneous
H2O(s)  H2O(l),
spontaneous
H2O(l)  H2O(s),
spontaneous
H2O(l)  H2O(s),
spontaneous
endothermic and
exothermic and
endothermic and
exothermic and
A 1-g sample of a substance has
the greatest entropy when it is in
the :
1.
2.
3.
4.
Crystalline state
Liquid state
Gaseous state
Solid state
The molecules of which
substance have the highest
average kinetic energy?
A.CO2 (g) at 20o
B. HCl
(g)
at 40o
C.N2(g) at 60o
D.He(g) at 0o
If the forward activation of the
rxn below is 20 kcal, what is
the activation of the reverse
reaction?
A(g) + B(g)  C(g)+D(g)+ 30 kcal
In a gaseous system, Temp
remaining constant, an increase in
pressure will
1.
2.
3.
4.
Increase the activation energy
Decrease the activation energy
Decrease the reaction rate
Increase the reaction rate
As the surface area of the Zinc
used in the reaction increases, the
rate of reaction will . . .
Zn(s) + 2HCl(aq)  ZnCl2(aq) + H2(g)
At 10oC, 23-g of a substance
saturates 100-g of water. What is
the substance?
What is the maximum number of
grams of NH4Cl that will dissolve in
200-g of water at 70oC
What is the solubility product
constant expression (Ksp) for the
reaction below
Ag2S(s) = 2Ag+(aq) + S-2(aq)
You now can review at home


If you know the special tricks
If you have the druthers