Chem 162 exam 1 practice test
with complete verified
solutions 2025
For the reaction: X + Y → Z ; the rate law is: rate = k[X]2[Y]. To
double the reaction rate :
A. double the concentration of Z
B. double the concentration of Y
C. double the concentration of X - answer double the
concentration of Y
115 grams of H2SO4 is dissolved in 500.0mL of water. What is the
Normality of the resulting solution? (assume all H+ enter the
solution)
A. 2.3
B. 4.7
C. 11.5 - answer B. 4.7
The initial volume of a gas cylinder is 750.0 mL. If the pressure of a
gas inside the cylinder changes from 840.0 mmHg to 360.0 mmHg,
what is the final volume the gas occupies?
A. 630.0 mL
B. 321.4 mL
C. 3.151 L
D. 1.750 L
E. none of the above - answer D. 1.750 L
,At STP, 12.69 g of a noble gas occupies 14.09 L. What is the identity
of the noble gas?
A. Ar
B. He
C. Kr
D. Ne
E. not enough information - answer D. Ne
A barometer uses mercury because:
A. it is a convenient, safe, lightweight material.
B. it is the only liquid metal at room temperature.
C. it is the traditional substance used, water could be as easily
used.
D. the density of mercury is very large which allows the barometer
to be short.
E. All of the above are true. - answer D. the density of mercury is
very large which allows the barometer to be short.
You need to prepare 2.00 L of 0.100 M Na2CO3 solution. The best
procedure is to weigh out
A. 10.6 g Na2CO3 and add water until the final solution has a
volume of 2.00 L.
B. 10.6 g Na2CO3 and add 2.00 L of water to it.
C. 21.2 g Na2CO3 and add water until the final solution has a
volume of 2.00 L.
D. 21.2 g Na2CO3 and add 2.00 L of water to it. - answer C. 21.2 g
Na2CO3 and add water until the final solution has a volume of 2.00 L
A possible rate law for: SO2Cl2 → SO2 + Cl2 is:
A. rate = k[SO2Cl2]X
, B. rate = k[SO2Cl2]y[Cl2]X
C. rate = k[SO2]y[Cl2]X - answer A. rate = k[SO2Cl2]X
The pressure of a gas is 1216 mmHg. What is its pressure in atm?
A. 1960 atm
B. 912000 atm
C. 1.6 atm - answer C. 1.6 atm
O2 gas at 25oC has pressure of 1.1 atm has density of:
A. 0.0019 g/L
B. 0.72 g/L
C. 1.4 g/L - answer C. 1.4 g/L
One mole O2(g) at 0oC and 1atm pressure will have a volume of
22.4L
True
False - answer true
Pressure exerted by a gas above the surface of liquid, describes:
A. vapor pressure
B. boiling point
C. atmospheric pressure - answer A. vapor pressure
15.0g of a substance at -60.0oC is heated to 0oC. Calculate the heat,
in calories, gained by the substance. (boiling point -50.0oC, freezing
with complete verified
solutions 2025
For the reaction: X + Y → Z ; the rate law is: rate = k[X]2[Y]. To
double the reaction rate :
A. double the concentration of Z
B. double the concentration of Y
C. double the concentration of X - answer double the
concentration of Y
115 grams of H2SO4 is dissolved in 500.0mL of water. What is the
Normality of the resulting solution? (assume all H+ enter the
solution)
A. 2.3
B. 4.7
C. 11.5 - answer B. 4.7
The initial volume of a gas cylinder is 750.0 mL. If the pressure of a
gas inside the cylinder changes from 840.0 mmHg to 360.0 mmHg,
what is the final volume the gas occupies?
A. 630.0 mL
B. 321.4 mL
C. 3.151 L
D. 1.750 L
E. none of the above - answer D. 1.750 L
,At STP, 12.69 g of a noble gas occupies 14.09 L. What is the identity
of the noble gas?
A. Ar
B. He
C. Kr
D. Ne
E. not enough information - answer D. Ne
A barometer uses mercury because:
A. it is a convenient, safe, lightweight material.
B. it is the only liquid metal at room temperature.
C. it is the traditional substance used, water could be as easily
used.
D. the density of mercury is very large which allows the barometer
to be short.
E. All of the above are true. - answer D. the density of mercury is
very large which allows the barometer to be short.
You need to prepare 2.00 L of 0.100 M Na2CO3 solution. The best
procedure is to weigh out
A. 10.6 g Na2CO3 and add water until the final solution has a
volume of 2.00 L.
B. 10.6 g Na2CO3 and add 2.00 L of water to it.
C. 21.2 g Na2CO3 and add water until the final solution has a
volume of 2.00 L.
D. 21.2 g Na2CO3 and add 2.00 L of water to it. - answer C. 21.2 g
Na2CO3 and add water until the final solution has a volume of 2.00 L
A possible rate law for: SO2Cl2 → SO2 + Cl2 is:
A. rate = k[SO2Cl2]X
, B. rate = k[SO2Cl2]y[Cl2]X
C. rate = k[SO2]y[Cl2]X - answer A. rate = k[SO2Cl2]X
The pressure of a gas is 1216 mmHg. What is its pressure in atm?
A. 1960 atm
B. 912000 atm
C. 1.6 atm - answer C. 1.6 atm
O2 gas at 25oC has pressure of 1.1 atm has density of:
A. 0.0019 g/L
B. 0.72 g/L
C. 1.4 g/L - answer C. 1.4 g/L
One mole O2(g) at 0oC and 1atm pressure will have a volume of
22.4L
True
False - answer true
Pressure exerted by a gas above the surface of liquid, describes:
A. vapor pressure
B. boiling point
C. atmospheric pressure - answer A. vapor pressure
15.0g of a substance at -60.0oC is heated to 0oC. Calculate the heat,
in calories, gained by the substance. (boiling point -50.0oC, freezing
