EOC Chemistry Review II
• Which is an empirical formula?
A. C2H2
B. H20
C. H2O2
D. C6H12O6
What is the % by mass of oxygen in sulfuric
acid?
A.
B.
c.
d.
l6%
33%
65%
98%
The temperature of a 2.0 liter sample helium
gas at STP is increased to 27oC and the
pressure is decreased to 80kPa. What is
the new volume of the helium sample?
a.
b.
c.
d.
1.4L
2.0L
2.8L
4.0
3 flasks of nitrogen, oxygen, and bromine
gas each having a pressure of 2 atms.
They are all put into one container. What
would be the total pressure of the one final
container.
How many grams of sulfuric acid are needed
to produce exactly 11.2 liters of hydrogen
measured STP?
Mg + H2SO4
a.
b.
c.
d.
24.5 g
49.0 g
98l.0 g
196 g
MgSO4 + H2
What is the total number of liters of oxygen
required to produce 40 liters of nitrous
oxide?
4NH3 + 5O2
a.
b.
c.
d.
5L
9L
32L
50L
4NO + 6H20
What is the concentration of a solution of
10moles of copper II nitrate in 5 liters of
solution?
a.
b.
c.
d.
.50 M
2.0 M
5.0 M
10. M
A 20 ml sample of .6 M HCl is diluted with
water to a volume 40ml. What is the new
concentration?
a.
b.
c.
d.
.15M
.60 M
.30 M
1.2 M
•
What is the pH of a solution that has a
hydrogen ion concentration of 1 x 10-10 M?
a.
b.
c.
d.
1
10
14
4
• What is the hydroxide ion concentration of
a solution with a pH 4 ?
•
•
•
•
A.
B.
C.
D.
1 x 10-4
1 x 10 -7
1 x 10 -10
1 x 10 -14
• The temperature of 100g of water changes
from 16.oC to 20.oC. What is the total
number of joules of heat energy absorbed
by the water?
•
•
•
•
A.
B.
C.
D.
105
168
420
1672
Label the graph for the forward reaction
Activation energy
E
Enthalpy or Heat of Reaction
H
Which conditions will increase the rate of a
chemical reaction?
a. Decreased temperature and decreased
concentration of reactants.
b. Decreased temperature and increased
concentration of reactants
c. Increase temperature and increased
concentration of reactants
A catalyst can increase the rate of a reaction
by
a. Decreasing the activation energy
b. Increasing the activation energy
c. Increasing the potential energy
4HCl + MnO2
MnCl2 + 2H2O + Cl2
a.
Manganese is reduced it changes from +4 to +2
b.
Manganese is oxidized it changes from +4 to +2
c.
Manganese is reduced it changes from +2 to +4
The half – life of carbon 14/6 is 5,730
years. What fraction of a 1 gram sample
would remain after 17,190 years?
A
B
C
D
½
¼
1/8
1/16
label