Gas Laws

Front

What is the ideal gas law?

Back

The ideal gas law is a fundamental equation in chemistry that relates the pressure (P), volume (V), temperature (T), and number of moles (n) of an ideal gas: PV = nRT, where R is the ideal gas constant.

Front

Define pressure in the context of gases.

Back

Pressure is the force exerted by gas particles colliding with the walls of their container, typically measured in atmospheres (atm) or pascals (Pa).

Front

What is STP in gas laws?

Back

STP stands for Standard Temperature and Pressure, defined as 0°C (273.15 K) and 1 atm pressure. It is used as a reference point for gas calculations.

Front

How does volume affect the pressure of a gas?

Back

According to Boyle's Law, if the temperature is constant, the pressure of a gas is inversely proportional to its volume: P1V1 = P2V2.

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) when pressure is held constant: V1/T1 = V2/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: V1/n1 = V2/n2.

Front

Calculate the volume of 8.1 moles of gas at STP.

Back

At STP, 1 mole of gas occupies 22.4 L. Therefore, 8.1 moles occupy 8.1 x 22.4 L = 181.44 L, approximately 182 L.

Front

What happens to the pressure of a gas when its volume is doubled at constant temperature?

Back

According to Boyle's Law, if the volume is doubled, the pressure is halved.

Front

How do you convert Celsius to Kelvin?

Back

To convert Celsius to Kelvin, add 273.15 to the Celsius temperature: K = °C + 273.15.

Front

What is the relationship between temperature and volume in gases?

Back

According to Charles's Law, as the temperature of a gas increases, its volume increases if pressure is constant.