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. It is expressed as PV = nRT, where R is the ideal gas constant.

Front

Define STP (Standard Temperature and Pressure).

Back

STP refers to standard conditions for temperature and pressure, defined as 0°C (273.15 K) and 1 atm pressure.

Front

What happens to the volume of a gas when temperature decreases?

Back

According to Charles's Law, the volume of a gas decreases as the temperature decreases, assuming pressure is constant.

Front

What is Boyle's Law?

Back

Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is held constant. Mathematically, it is expressed as P1V1 = P2V2.

Front

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

Back

The relationship is described by Boyle's Law: as the volume of a gas increases, the pressure decreases, and vice versa, when temperature is constant.

Front

How do you calculate the pressure of a gas in a mixture?

Back

The total pressure of a gas mixture is the sum of the partial pressures of each gas, as described by Dalton's Law of Partial Pressures: P_total = P1 + P2 + P3 + ...

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. It can be expressed as V1/T1 = V2/T2.

Front

Define the term 'partial pressure'.

Back

Partial pressure is the pressure that a single gas in a mixture would exert if it occupied the entire volume alone at the same temperature.

Front

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

Back

The gas constant (R) is a proportionality constant that relates the energy scale to the temperature scale in the Ideal Gas Law. Its value depends on the units used.

Front

How does increasing the number of moles of gas affect pressure?

Back

According to the Ideal Gas Law, increasing the number of moles (n) of gas, while keeping volume and temperature constant, will increase the pressure (P) of the gas.