Gas Behavior and Properties

Front

What is Boyle's Law?

Back

Boyle's Law states that at constant temperature, the pressure of a given mass of gas is inversely proportional to its volume. If the pressure increases, the volume decreases, and vice versa.

Front

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

Back

The volume decreases.

Front

How do you calculate the number of moles of gas using the ideal gas law?

Back

Use the formula PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the ideal gas constant, and T is temperature in Kelvin.

Front

If the volume of a gas is 2.50 L, the pressure is 850 mmHg, and the temperature is 325 K, how many moles of gas are present?

Back

0.105 moles.

Front

What is the relationship between the number of gas particles and pressure?

Back

More gas particles result in higher pressure, as they collide more frequently with the walls of the container.

Front

How does temperature affect gas pressure?

Back

Increasing the temperature of a gas increases its pressure if the volume is held constant.

Front

What happens to the pressure of a gas when its temperature decreases?

Back

The pressure decreases if the volume is held constant.

Front

What is the ideal gas constant (R) in the context of the ideal gas law?

Back

The ideal gas constant (R) is a proportionality constant in the ideal gas law, typically 0.0821 L·atm/(K·mol) or 62.4 L·mmHg/(K·mol).

Front

What is Charles's Law?

Back

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

Front

What is the effect of increasing the volume of a gas at constant temperature?

Back

The pressure decreases.