Gas Laws Practice Test

Front

What is the relationship between pressure and volume of a gas?

Back

Pressure and volume are related indirectly; as one increases, the other decreases (Boyle's Law).

Front

What is the formula for Boyle's Law?

Back

P1V1 = P2V2, where P is pressure and V is volume.

Front

What is STP in gas laws?

Back

STP stands for Standard Temperature and Pressure, which is 0°C (273.15 K) and 1 atm.

Front

How do you calculate the number of moles of a gas at STP?

Back

Use the formula: n = V / 22.4 L, where n is the number of moles and V is the volume in liters.

Front

What happens to the volume of a gas if the temperature increases at constant pressure?

Back

The volume increases (Charles's Law).

Front

What is Charles's Law?

Back

Charles's Law states that the volume of a gas is directly proportional to its temperature in Kelvin at constant pressure.

Front

What is the Combined Gas Law?

Back

The Combined Gas Law combines Boyle's, Charles's, and Gay-Lussac's laws: (P1V1)/T1 = (P2V2)/T2.

Front

What is Avogadro's Law?

Back

Avogadro's Law states that equal volumes of gases at the same temperature and pressure contain an equal number of molecules.

Front

How do you find the volume of a gas using the Ideal Gas Law?

Back

Use the formula: PV = nRT, where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature.

Front

What is the gas constant (R) in the Ideal Gas Law?

Back

R = 0.0821 L·atm/(K·mol) or 8.314 J/(K·mol).