Theory

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Theo ry Units Which Formula Problem s Wild Card 100 100 100 100 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 500

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Theory. Units. Which Formula. Problems. Wild Card. 100. 100. 100. 100. 100. 2 00. 2 00. 2 00. 2 00. 2 00. 300. 300. 300. 300. 300. 400. 400. 400. 400. 400. 5 00. 5 00. 5 00. 5 00. 5 00. Theory 100. Gas pressure is caused by: - PowerPoint PPT Presentation

Transcript of Theory

Page 1: Theory

Theory Units Which Formula Problems Wild Card

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Page 2: Theory

Theory 100

• Gas pressure is caused by: A - gas molecules reacting with other gas molecules B - gas molecules hitting the walls of a container C - gas molecules heating up D - gas molecules hitting other gas molecules

ANSWER

Page 3: Theory

Theory 100

• Gas pressure is caused by: B - gas molecules hitting the walls of a container

Main

Page 4: Theory

Each of these flasks contains the same number of gas molecules. In which would the pressure be highest?

A - Flask 1B - Flask 4C - Flask 3D - Flask 2

Theory 200

ANSWER

Page 5: Theory

Each of these flasks contains the same number of gas molecules. In which would the pressure be highest?

B - Flask 4

Theory 200

Main

Page 6: Theory

At a temperature of 25°C and a pressure of 1atm, which of the following molecules will effuse the most rapidly?

A - oxygen, O2

B - carbon dioxide, CO2

C - hydrogen chloride, HClD - nitrogen, N2

Theory 300

ANSWER

Page 7: Theory

At a temperature of 25°C and a pressure of 1atm, which of the following molecules will effuse the most rapidly?

D - nitrogen, N2

Theory 300

Main

Page 8: Theory

Theory 400

• As the temperature of the gas in a balloon decreases, which of the following occurs?

• A – The average kinetic energy of the gas decreases• B – The gas pressure inside the balloon increases• C – The volume of the balloon increases• D – All of the above

ANSWER

Page 9: Theory

• As the temperature of the gas in a balloon decreases, which of the following occurs?

• A – The average kinetic energy of the gas decreases

Theory 400

Main

Page 10: Theory

Theory 500

• At a certain temperature and pressure, 2 mol of carbon dioxide has a volume of 3L. A 3L sample of hydrogen at the same temperature and pressure___.

• A – contains the same number of atoms• B – has a higher density• C – contains the same number of molecules• D – has the same mass

ANSWER

Page 11: Theory

Theory 500

• At a certain temperature and pressure, 2 mol of carbon dioxide has a volume of 3L. A 3L sample of hydrogen at the same temperature and pressure___.

• C – contains the same number of molecules

Main

Page 12: Theory

Units 100

Convert to Kelvin:

15°C

ANSWER

Page 13: Theory

Units 100

Convert to Kelvin:

15°C

15 + 273 = 288K

Main

Page 14: Theory

Units 200

Convert to Celsius:

100K

ANSWER

Page 15: Theory

Units 200

Convert to Celsius:

100K

100-273 = -173°C

Main

Page 16: Theory

Units 300

In the ideal gas law, what is the value of R?

ANSWER

Page 17: Theory

Units 300

In the ideal gas law, what is the value of R?

R = 0.0821 L•atm/K•mol

Main

Page 18: Theory

Units 400

Convert to atm’s:

123.4 kPa

Answer

Page 19: Theory

Units 400

Convert to atm’s:

123.4 kPa

123.4 kpa x (1atm/101.325kpa) = 1.218 atm

Main

Page 20: Theory

Units 500

What is standard pressure and temperature?

Answer

Page 21: Theory

Units 500

What is standard pressure and temperature?

T = 273K P = 1atm

Main

Page 22: Theory

Which Formula 100

• A sample of nitrogen occupies a volume of 250 ml at 25°C. What volume will it occupy at 95°C?

Answer

Page 23: Theory

Which Formula 100

• A sample of nitrogen occupies a volume of 250 ml at 25°C. What volume will it occupy at 95°C?

• Charles’ Law: V1/T1 = V2/T2

Main

Page 24: Theory

Which Formula 200

• A 175 ml sample of neon gas had its pressure changed from 75 kPa to 150 kPa. What is the new volume?

Answer

Page 25: Theory

Which Formula 200

• A 175 ml sample of neon gas had its pressure changed from 75 kPa to 150 kPa. What is the new volume?

Boyle’s Law: P1 x V1 = P2 x V2

Main

Page 26: Theory

Which Formula 300

• A rigid container of O2 has a pressure of 185 kPa at a temperature of 458 K. What is the pressure at 283 K?

Answer

Page 27: Theory

Which Formula 300

• A rigid container of O2 has a pressure of 185 kPa at a temperature of 458 K. What is the pressure at 283 K?

– Gay Lussac’s Law : P1 / T1 = P2 / T2

Main

Page 28: Theory

Which Formula 400

• Chlorine gas exerts a pressure of 900 torr. When the pressure is changed to 1.35 atm, it’s volume is 250 ml. What was the original volume?

Answer

Page 29: Theory

Which Formula 400

• Chlorine gas exerts a pressure of 900 torr. When the pressure is changed to 1.35 atm, it’s volume is 250 ml. What was the original volume?

Gay-Lassac’s : P1 x V1 = P2 x V2

Main

Page 30: Theory

Which Formula 500

• What is the volume occupied by 95 grams of chlorine gas at STP?

Answer

Page 31: Theory

Which Formula 500

• What is the volume occupied by 95 grams of chlorine gas at STP?

Ideal: PV = nRT

Main

Page 32: Theory

Problems 100

• How many moles of nitrogen are in a flask with a volume of 150.0 ml at a pressure of 200.0 kPa and a temperature of 250 K

Answer

Page 33: Theory

Problems 100

• How many moles of nitrogen are in a flask with a volume of 150.0 ml at a pressure of 200.0 kPa and a temperature of 250 K

n = .014 moles

Main

Page 34: Theory

Problems 200

A small sample of helium gas occupies 6 mL at a temperature of 250 K. At what temperature does the volume expand to 9 mL?

Answer

Page 35: Theory

Problems 200

A small sample of helium gas occupies 6 mL at a temperature of 250 K. At what temperature does the volume expand to 9 mL? 375 K

Main

Page 36: Theory

Problems 300

When a supply of hydrogen gas is held in a 4.00 liter container at 320 K it exerts a pressure of 1.05 atm. The supply is moved to a 2.00 liter container, and cooled to 160 K. What is the new pressure of the confined gas.

Answer

Page 37: Theory

Problems 300

When a supply of hydrogen gas is held in a 4.00 liter container at 320 K it exerts a pressure of 1.05 atm. The supply is moved to a 2.00 liter container, and cooled to 160 K. What is the new pressure of the confined gas P = 1.05 atm

Main

Page 38: Theory

Problems 400

A sample of helium gas diffuses at .0659 m/s at a certain temperature. Calculate the velocity of chlorine gas at the same temperature.

Answer

Page 39: Theory

Problems 400

A sample of helium gas diffuses at .0659 m/s at a certain temperature. Calculate the velocity of chlorine gas at the same temperature.

V2 = .0221 m/s

Main

Page 40: Theory

Problems 500

A mixture of gases at a total pressure of 95 kPa contains N2, CO2 and O2. The partial pressure of CO2 is 24 kPa, and the partial pressure of N2 is 35 kPa. What is the pressure of O2 in atms?

Answer

Page 41: Theory

Problems 500

A mixture of gases at a total pressure of 95 kPa contains N2, CO2 and O2. The partial pressure of CO2 is 24 kPa, and the partial pressure of N2 is 35 kPa. What is the pressure of O2 in atms?

.36 atm

Main

Page 42: Theory

Wild Card 100

As the temperature of a fixed volume of gas increases, the pressure will ______.

Answer

Page 43: Theory

Wild Card 100

As the temperature of a fixed volume of gas increases, the pressure will ______.

• Increase

Main

Page 44: Theory

Wild Card 200

.A gas occupies a volume of 120. ml at 25.0°C and 97.0 kPa. What is the volume of the gas at STP?

Answer

Page 45: Theory

Wild Card 200

.A gas occupies a volume of 120. ml at 25.0°C and 97 kPa. What is the volume of the gas at STP?

V2 = .105L

Main

Page 46: Theory

Wild Card 300

Given the following chemical equation: CH4 + 2O2 -> CO2 + 2H2O

What volume of steam H2O will be produced at 35°C and 2.6 atm if .875 mol of CH4 completely react with excess oxygen?

Answer

Page 47: Theory

Wild Card 300

Given the following chemical equation: CH4 + 2O2 -> CO2 + 2H2O

What volume of steam H2O will be produced at 35°C and 2.6 atm if .875 mol of CH4 completely react with excess oxygen?

17L

Main

Page 48: Theory

Wild Card 400

The volume of a gas is tripled while the temperature is held constant. How does the gas pressure change?

A – It is also tripledB – It is reduced by one thirdC – It does not changeD – It depends on the type of gas

Answer

Page 49: Theory

Wild Card 400

The volume of a gas is tripled while the temperature is held constant. How does the gas pressure change?

B – It is reduced by one third

Main

Page 50: Theory

Wild Card 500

A 15.50 gram sample of a gas exerts a pressure of 1.40 atmospheres when held in an 8.00 liter at 22 °C. What is the molar mass of the gas?

Answer

Page 51: Theory

Wild Card 500

A 15.50 gram sample of a gas exerts a pressure of 1.40 atmospheres when held in an 8.00 liter at 22 °C. What is the molar mass of the gas?

33.5 g/mol

Main