Gas Law Vocabulary
What is the equation for Ideal Gas Law and what does it relate?
The Ideal Gas Law is PV = nRT, which relates pressure, volume, moles, and temperature of a gas.
What happens to pressure if temperature increases at constant volume and what law does this represent?
Pressure increases as temperature increases (Gay-Lussac’s Law)
A gas is stored in a 10.0 L container at 300 K and 2.0 atm. What will the pressure be if the volume is reduced to 5.0 L at constant temperature? Use Boyle's Law
4.0 atm
True or False: Volume increases when temperature increases at constant pressure.
True, as per Charles’s Law.
You place an inflated balloon in the freezer. What will happen to the balloon’s volume?
The volume will decrease because the gas inside will contract as the temperature drops
What is Avogadro’s Law?
What happens to pressure if volume increases at constant temperature and what law does this represent?
Pressure decreases as volume increases (Boyle’s Law).
If the volume of a gas is 15.0 L at 1.0 atm and 273 K, what will the new volume be if the pressure is increased to 2.0 atm at constant temperature?
7.5 L
True or False: Pressure increases when volume decreases at constant temperature
True, as per Boyle’s Law
You double the pressure of a gas while keeping the temperature constant. What happens to the volume?
The volume will decrease by half
What is Boyle's Law?
What is P1 * V1 = P2 * V2?
What does Charles’s Law say about temperature and volume?
Volume is directly proportional to temperature in Kelvin when pressure is constant.
Calculate the volume of 2.5 moles of gas at 300 K and 1.5 atm using the Ideal Gas Law.
41.05 L
True or False: The Ideal Gas Law is only valid at high pressures
False, it works best at low pressures and high temperatures
You heat a sealed container of gas to a very high temperature. What do you predict will happen to the pressure inside the container?
The pressure will increase because the gas particles will move faster and collide with the walls of the container more forcefully (Gay-Lussac’s Law).
What is the combined gas law?
(P1 * V1) / T1 = (P2 * V2) / T2
How does Avogadro’s Law explain volume changes?
As the amount of gas increases, volume increases at constant temperature and pressure.
How much pressure will a 3.0 mol gas exert in a 12.0 L container at 350 K?
7.18
True or False: Avogadro’s Law links volume to temperature.
False, it links volume to the number of moles
You have a balloon at 0°C and 1 atm. What will happen to the balloon’s volume if you heat it to 100°C while keeping the pressure constant?
The volume will increase because the gas expands as the temperature rises (Charles’s Law).
What is the Ideal Gas Constant (R) and its units?
R = 0.0821 L·atm/mol·K
What is the Combined Gas Law used for?
It combines Boyle’s, Charles’s, and Gay-Lussac’s Laws for when pressure, volume, and temperature all change.
A gas has an initial pressure of 2.3 atm at 300 K occupies a volume of 10 L. If the temperature is increased to 450 K and the volume changes to 15 L, what is the new pressure?
2.3 atm
True or False: The volume of a gas is directly proportional to the pressure when temperature and the number of moles are constant.
False, according to Boyle's Law, where pressure and volume are inversely proportional when temperature and moles are constant.
You increase the number of gas molecules in a rigid container without changing the temperature. What will happen to the pressure?
The pressure will increase because more gas particles will collide with the walls of the container (Avogadro’s Law).