8-2 Ideal Gas Law & Gas Stoichiometry (Chem 1)

A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?

• 234 mmHg
• 1.37 mmHg
• 2.64 mmHg
• 1, 494 mmHg

A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 2.00 atm, 3.00 atm, and 4.00 atm, respectively. What is the total pressure inside the container?

• 2 atm
• 4 atm
• 3 atm
• 9 atm

Mg₃N₂ + 3H₂O ––> 3 MgO + 2NH₃

If 10.3 L of ammonia gas at 20.0˚C and 0.989 atm is created, how many liters of water at STP are required?

• 9.49 L H₂O

• 15.45 L H₂O

• 0.204 L H₂O

• 10.3 L H₂O

2Al + 6HCl --> 2AlCl₃ + 3H₂

Aluminium reacts with hydrochloric acid. How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP?

• 13

• 8.8

• 0.99

• 1.0

Tags

NGSS.HS-PS1-7

Determine the Celsius temperature of 2.49 moles of gas contained in a 1.00-L vessel at a pressure of 143 kPa.

R = 8.31LkPa/molK

• -266 degrees C

• -622 degrees C

• 622 degrees C

• 266 degrees C

What does R stand for

• Ideal gas constant

• Real gas constant

• Temperature constant

• Ideal gas law

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure.

R = 0.0821 Latm/molK

• 0 K

• 107 K

• 207 K

• 310 K

1. Under which conditions does a real gas behave very much like an ideal gas?

• high temperature and low pressure

• high temperature and high pressure

• low temperature and high pressure

• low temperature and low pressure

In a closed system, 12.8 mol of Helium occupies a volume of 2.5 L at a temperature of 55˚C. What is the pressure of this system in kilopascals (kpa)? R = 8.31 kPaL/(molK)

2Al + 6HCl --> 2AlCl₃ + 3H₂

If you react 1.50 L of HCl with excess Al, how many liters of aluminum chloride will form?