Gases

Question 1

What are the Principles that the kinetic theory of gases is based on?

Answer 1

• Gases consist of molecules except noble gases
• The average distance between molecules in gases is very large compared to the distances of the molecules themselves
• The molecules in a gas move in a rapid, random and straight line motion, colliding with themselves and the edge of any container
• All collisions between gases are perfectly elastic, there is no overall loss in energy
• The average kinetic energy of the molecules increases as the temperature of the gas increases

Question 2

What does Boyle’s Law state?

Answer 2

Boyle’s law states that a fixed amount of gas maintained at constant temperature is inversely proportionate to the gas pressure.

Question 3

What does Charles’ Law state?

Answer 3

Charles’ law states that at constant pressure, the volume of a fixed amount of gas is directly proportional to the temperature of that gas.

Question 4

What does Avagadro’s hypothesis state?

Answer 4

At the same temperature and pressure, equal volumes of different gases contain the same number of molecules.

Question 5

What is standard temperature and pressure?

Answer 5

273.15K and 100kPa

Question 6

What does Dalton’s law state?

Answer 6

Dalton’s law states that the pressures of all the individual gases in a mixture of gases adds up to the total pressure of the mixture.