Mastering The Ideal Gas Law And Molar Volume Calculations

Mr. Donnie explains the ideal gas law (PV=nRT) through various practice problems. He covers calculating molar volume at STP, determining moles of gas in a container, finding the volume of CO2 produced from a reaction, calculating the pressure of CH4 gas, converting gas volume to cubic meters, and determining the amount of HCL needed for a reaction with calcium. Each problem is broken down step-by-step, emphasizing the use of the ideal gas law and stoichiometry.

What does the 'R' in the ideal gas law equation PV = nRT represent?

• Gas constant

• Resistance

• Radius

• Reactivity

At standard temperature and pressure (STP), what is the molar volume of a gas?

• 22.4 liters

• 24.0 liters

• 18.0 liters

• 20.0 liters

How many moles of gas are in a 45.0-liter container at 25°C and 500 mmHg?

• 1.21 moles

• 0.75 moles

• 1.50 moles

• 2.50 moles

What is the first step in calculating the volume of CO2 produced from sodium bicarbonate?

• Calculate the pressure

• Determine the volume directly

• Convert kilograms to grams

• Find the temperature in Kelvin

What is the gram formula mass of sodium bicarbonate (NaHCO3)?

• 75.00 grams/mole

• 80.00 grams/mole

• 84.01 grams/mole

• 90.00 grams/mole

How many liters of CO2 are produced from 92.25 moles of NaHCO3 at 1.5 atm and 25°C?

• 1,800 liters

• 1,500 liters

• 1,000 liters

• 1,200 liters

What is the pressure of CH4 gas in a 30-liter vessel at 402 Kelvin?

• 0.413 atm

• 0.600 atm

• 0.500 atm

• 0.300 atm

Convert 8.23 liters to cubic meters.

• 0.0823 cubic meters

• 0.00823 cubic meters

• 8.23 cubic meters

• 0.823 cubic meters

What is the balanced chemical equation for the reaction of HCl with calcium to produce hydrogen gas?

• 2 HCl + Ca → H2 + CaCl

• HCl + Ca → H2 + CaCl2

• 2 HCl + Ca → H2 + CaCl2

• HCl + Ca → H2 + CaCl

If you need 11.4 liters of H2, how many liters of HCl are required?

• 5.7 liters

• 11.4 liters

• 34.2 liters

• 22.8 liters