Kinetic Theory of Gases
Physics ⇒ Heat and Thermodynamics
Kinetic Theory of Gases starts at 10 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Kinetic Theory of Gases.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 11
A container holds 2 moles of an ideal gas at 27°C. Calculate the total kinetic energy of the gas. (R = 8.314 J mol-1 K-1)
A gas at 27°C is heated to 327°C at constant volume. By what factor does the pressure increase?
A gas is compressed to half its original volume at constant temperature. What happens to its pressure?
A sample of gas at 300 K has a root mean square speed of 500 m/s. What will be the root mean square speed at 1200 K?
Calculate the root mean square speed of oxygen molecules (M = 32 g/mol) at 300 K. (R = 8.314 J mol-1 K-1)
Describe the effect of increasing temperature on the distribution of molecular speeds in a gas.
Explain why lighter gas molecules move faster than heavier ones at the same temperature.
Explain why real gases deviate from ideal gas behavior at high pressures and low temperatures.
If the temperature of an ideal gas is doubled at constant volume, what happens to the pressure?
State Avogadro's hypothesis as it applies to gases.
State the relationship between the average kinetic energy of a gas molecule and temperature.
Which law states that the pressure of a given mass of gas is inversely proportional to its volume at constant temperature?
A gas is contained in a rigid vessel. If the temperature is increased from 200 K to 800 K, by what factor does the root mean square speed of its molecules change?
A sample of gas is compressed isothermally to one-third of its original volume. If the initial pressure was 90 kPa, what is the final pressure?
A vessel contains a mixture of helium and neon gases at the same temperature. If the ratio of their partial pressures is 2:1, what is the ratio of the number of helium molecules to neon molecules in the vessel?
Derive the expression for the pressure exerted by an ideal gas in terms of the density (ρ) and the root mean square speed (vrms) of its molecules.
Explain why the pressure of a gas decreases when its volume is increased at constant temperature, according to the kinetic theory of gases.
If the average kinetic energy of a gas molecule is 6.21 × 10-21 J, calculate the temperature of the gas. (Boltzmann constant k = 1.38 × 10-23 J K-1)
If the mass of a gas molecule is doubled while keeping the temperature constant, how does the root mean square speed change?
