Question 1

In ideal gas equation calculations, expressing pressure in Pascals (Pa) , necessitates the use of the gas constant, R, equal to __________.

Accepted Answer

A)  0.08206 atm L mol-1K-1
B)  8.314 J mol-1K-1
C)  62.36 L torr mol-1K-1
D)  1.987 cal mol-1K-1
E)  none of the aboveF) All of the above
G) None of the above

Question 2

The density of nitric oxide (NO) gas at 1.21 atm and 46.2°C is __________ g/L.

Accepted Answer

A)  0.0462
B)  0.722
C)  1.39
D)  0.319
E)  9.6F) B) and C)
G) C) and E)

Question 3

The volume of HCl gas required to react with excess Ca to produce 11.4 L of hydrogen gas at 1.62 atm and 62.0°C is __________ L.

Accepted Answer

The answer of The volume of HCl gas required to...

Question 4

The Mond process produces pure nickel metal via the thermal decomposition of nickel tetracarbonyl: Ni(CO) 4 (l) → Ni (s) + 4CO (g) .
What volume (L) of CO is formed from the complete decomposition of 444 g of Ni(CO) 4 at 752 torr and 22.0°C?

Accepted Answer

A)  0.356
B)  63.7
C)  255
D)  20.2
E)  11.0F) A) and B)
G) C) and E)

Question 5

The volume of hydrogen gas at 38.0°C and 763 torr that can be produced by the reaction of 4.33 g of zinc with excess sulfuric acid is __________ L.

Accepted Answer

A)  1.68
B)  2.71 × 10-4
C)  3.69 × 104
D)  2.84
E)  0.592F) C) and D)
G) All of the above

Question 6

A gas is considered "ideal" if one mole of it in a one-liter container exerts a pressure of exactly 1 atm at room temperature.

Accepted Answer

A) True 
 B)False

Question 7

Sodium bicarbonate is reacted with concentrated hydrochloric acid at 25.0°C and 1.50 atm. The reaction of 7.75 kg of bicarbonate with excess hydrochloric acid under these conditions will produce __________ L of CO2.

Accepted Answer

A)  1.82 x 103
B)  2.85 x 104
C)  1.82 x 104
D)  1.50 x 103
E)  8.70 x 102F) A) and B)
G) C) and E)

Question 8

The volume of 0.25 mol of a gas at 72.7 kPa and 15°C is __________ m3.

Accepted Answer

A)  8.1 × 10-5
B)  1.2 × 10-4
C)  4.3 × 10-4
D)  8.2 × 10-3
E)  2.2 × 10-1F) A) and D)
G) A) and E)

Question 9

SO2 (5.00 g) and CO2 (5.00 g) are placed in a 750.0 mL container at 50.0°C. The partial pressure of SO2 in the container was __________ atm.

Accepted Answer

A)  2.76
B)  4.02
C)  6.78
D)  0.192
E)  1.60F) B) and E)
G) C) and D)

Question 10

Which of the following is not part of the kinetic-molecular theory?

Accepted Answer

A)  Atoms are neither created nor destroyed by ordinary chemical reactions.
B)  Attractive and repulsive forces between gas molecules are negligible.
C)  Gases consist of molecules in continuous, random motion.
D)  Collisions between gas molecules do not result in the loss of energy.
E)  The volume occupied by all of the gas molecules in a container is negligible compared to the volume of the container.F) B) and C)
G) None of the above

Question 11

SO2 (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0°C. The partial pressure of CO2 in the container was __________ atm.

Accepted Answer

A)  6.78
B)  2.76
C)  1.60
D)  0.192
E)  4.02F) B) and D)
G) B) and C)

Question 12

A sample of a gas originally at 25°C and 1.00 atm pressure in a 2.5 L container is subject to a pressure of 0.85 atm and a temperature of 15°C. The final volume of the gas is __________ L.

Accepted Answer

A)  3.0
B)  2.8
C)  2.6
D)  2.1
E)  0.38F) B) and D)
G) B) and C)

Question 13

The reaction of 100 mL of Cl2 gas with 100 mL of CH4 gas via the equation: Cl2 (g) + CH4 (g) → HCl (g) + CH3Cl (g) 
Will produce a total of __________ mL of products if pressure and temperature are kept constant.

Accepted Answer

A)  100
B)  50
C)  200
D)  150
E)  250F) D) and E)
G) None of the above

Question 14

The density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that will float in air at STP?

Accepted Answer

A)  CH4
B)  NO
C)  Ne
D)  N H3
E)  HFF) A) and B)
G) All of the above

Question 15

A 1.44-g sample of an unknown pure gas occupies a volume of 0.335 L at a pressure of 1.00 atm and a temperature of 100.0°C. The unknown gas is __________.

Accepted Answer

A)  argon
B)  helium
C)  krypton
D)  neon
E)  xenonF) C) and D)
G) A) and E)

Question 16

At 333 K, which of the pairs of gases below would have the most nearly identical rates of effusion?

Accepted Answer

A)  N2O and NO2
B)  CO and N2
C)  N2 and O2
D)  CO and CO2
E)  NO2 and N2O4F) C) and D)
G) D) and E)

Question 17

The density of N2O at 1.53 atm and 45.2°C is __________ g/L.

Accepted Answer

A)  18.2
B)  1.76
C)  0.388
D)  9.99
E)  2.58F) C) and D)
G) All of the above

Question 18

The density of chlorine gas at 1.21 atm and 34.9°C is __________ g/L.

Accepted Answer

A)  0.0479
B)  0.295
C)  0.423
D)  1.70
E)  3.39F) B) and E)
G) A) and E)

Question 19

The pressure in a 12.2 L vessel that contains 2.34 g of carbon dioxide, 1.73 g of sulfur dioxide, and 3.33 g of argon, all at 42 °C is __________ mm Hg.

Accepted Answer

A)  263
B)  134
C)  395
D)  116
E)  0.347F) B) and C)
G) D) and E)

Question 20

A sample of H2 gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies __________ L at 353 K and 2.00 atm.

Accepted Answer

A)  109
B)  68.2
C)  54.7
D)  147
E)  77.3F) B) and D)
G) All of the above

Exam 10: Gases

The volume of 0.25 mol of a gas at 72.7 kPa and 15°C is __________ m3.

Correct AnswerverifiedShow Answer

The reaction of 100 mL of Cl2 gas with 100 mL of CH4 gas via the equation: Cl2 (g) + CH4 (g) → HCl (g) + CH3Cl (g) Will produce a total of __________ mL of products if pressure and temperature are kept constant.

Correct AnswerverifiedShow Answer

The Mond process produces pure nickel metal via the thermal decomposition of nickel tetracarbonyl: Ni(CO) 4 (l) → Ni (s) + 4CO (g) . What volume (L) of CO is formed from the complete decomposition of 444 g of Ni(CO) 4 at 752 torr and 22.0°C?

Correct AnswerverifiedShow Answer

Which of the following is not part of the kinetic-molecular theory?

Correct AnswerverifiedShow Answer

The density of chlorine gas at 1.21 atm and 34.9°C is __________ g/L.

Correct AnswerverifiedShow Answer

The volume of hydrogen gas at 38.0°C and 763 torr that can be produced by the reaction of 4.33 g of zinc with excess sulfuric acid is __________ L.

Correct AnswerverifiedShow Answer

A sample of a gas originally at 25°C and 1.00 atm pressure in a 2.5 L container is subject to a pressure of 0.85 atm and a temperature of 15°C. The final volume of the gas is __________ L.

Correct AnswerverifiedShow Answer

Sodium bicarbonate is reacted with concentrated hydrochloric acid at 25.0°C and 1.50 atm. The reaction of 7.75 kg of bicarbonate with excess hydrochloric acid under these conditions will produce __________ L of CO2.

Correct AnswerverifiedShow Answer

SO2 (5.00 g) and CO2 (5.00 g) are placed in a 750.0 mL container at 50.0°C. The partial pressure of SO2 in the container was __________ atm.

Correct AnswerverifiedShow Answer

The density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that will float in air at STP?

Correct AnswerverifiedShow Answer

A sample of H2 gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies __________ L at 353 K and 2.00 atm.

Correct AnswerverifiedShow Answer

The density of N2O at 1.53 atm and 45.2°C is __________ g/L.

Correct AnswerverifiedShow Answer

At 333 K, which of the pairs of gases below would have the most nearly identical rates of effusion?

Correct AnswerverifiedShow Answer

A gas is considered "ideal" if one mole of it in a one-liter container exerts a pressure of exactly 1 atm at room temperature.

Correct AnswerverifiedShow Answer

SO2 (5.00 g) and CO2 (5.00 g) were placed in a 750.0 mL container at 50.0°C. The partial pressure of CO2 in the container was __________ atm.

Correct AnswerverifiedShow Answer

In ideal gas equation calculations, expressing pressure in Pascals (Pa) , necessitates the use of the gas constant, R, equal to __________.

Correct AnswerverifiedShow Answer

The pressure in a 12.2 L vessel that contains 2.34 g of carbon dioxide, 1.73 g of sulfur dioxide, and 3.33 g of argon, all at 42 °C is __________ mm Hg.

Correct AnswerverifiedShow Answer

The density of nitric oxide (NO) gas at 1.21 atm and 46.2°C is __________ g/L.

Correct AnswerverifiedShow Answer

A 1.44-g sample of an unknown pure gas occupies a volume of 0.335 L at a pressure of 1.00 atm and a temperature of 100.0°C. The unknown gas is __________.

Correct AnswerverifiedShow Answer

The volume of HCl gas required to react with excess Ca to produce 11.4 L of hydrogen gas at 1.62 atm and 62.0°C is __________ L.

Correct AnswerverifiedShow Answer

The volume of 0.25 mol of a gas at 72.7 kPa and 15°C is __________ m³.

Correct Answer
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The reaction of 100 mL of Cl₂ gas with 100 mL of CH₄ gas via the equation: Cl₂ (g) + CH₄ (g) → HCl (g) + CH₃Cl (g) Will produce a total of __________ mL of products if pressure and temperature are kept constant.

Correct Answer
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The Mond process produces pure nickel metal via the thermal decomposition of nickel tetracarbonyl: Ni(CO) ₄ (l) → Ni (s) + 4CO (g) . What volume (L) of CO is formed from the complete decomposition of 444 g of Ni(CO) ₄ at 752 torr and 22.0°C?

Correct Answer
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Sodium bicarbonate is reacted with concentrated hydrochloric acid at 25.0°C and 1.50 atm. The reaction of 7.75 kg of bicarbonate with excess hydrochloric acid under these conditions will produce __________ L of CO₂.

Correct Answer
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SO₂ (5.00 g) and CO₂ (5.00 g) are placed in a 750.0 mL container at 50.0°C. The partial pressure of SO₂ in the container was __________ atm.

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A sample of H₂ gas (12.28 g) occupies 100.0 L at 400.0 K and 2.00 atm. A sample weighing 9.49 g occupies __________ L at 353 K and 2.00 atm.

Correct Answer
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The density of N₂O at 1.53 atm and 45.2°C is __________ g/L.

Correct Answer
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SO₂ (5.00 g) and CO₂ (5.00 g) were placed in a 750.0 mL container at 50.0°C. The partial pressure of CO₂ in the container was __________ atm.

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