Gas Team Review Game

?1 List all 5 parts of the Kinetic Molecular Theory.

Answer 1) Gases consist of large numbers of tiny particles that are far apart relative to their size. 2) Collisions are elastic. 3) Gas particles are in continuous, rapid, random motion. 4) There are no forces of attraction or repulsion between gas particles. 5) The average kinetic energy depends on temperature of the gas.

?2 A spontaneous mixing of two gases caused by random motion is _____________.

Answer Diffusion

Give an example of diffusion and explain. ?3 Give an example of diffusion and explain.

Answers will vary

?4 _________ is a process by which gas particles pass through a tiny opening.

Effusion

Give an example of effusion and explain. ?5 Give an example of effusion and explain.

Answers will vary.

?6 What does STP stand for?

Standard Temperature and Pressure

What is standard temperature in Celsius and Kelvin? ?7 What is standard temperature in Celsius and Kelvin?

O°C and 273K

What is standard pressure in atm? ?8 What is standard pressure in atm?

1 atm

?9 Convert -10.0°C to K.

263K

?10 Convert 125mmHg to atm

0.164atm

According to the KMT, what will happen when two gas particles collide? ?11 According to the KMT, what will happen when two gas particles collide?

They will have an elastic collision and their energy will be conserved (no loss or gain of energy).

Draw the 3 graphs relating temperature, pressure, and volume. ?12 Draw the 3 graphs relating temperature, pressure, and volume.

PT-direct PV-indirect TV-direct

?13 You are planning an experiment that requires 0.0580mol of nitrogen monoxide gas. What volume would you need at STP?

1.30L

?14 A(n) _________ gas is an imaginary gas that perfectly fits all the assumptions of the KMT.

Ideal

?15 A(n) ______ gas is a gas that does not behave completely according to the assumptions of the KMT.

Real

?16 A gas has a pressure of 1.26atm and occupies a volume of 7.40L. If the gas is compressed to a volume of 2.93L, what will its pressure be, assuming constant temperature?

3.18atm

?17 A sample of carbon dioxide gas occupies 638mL at 0.893atm and 12°C. What will the pressure be at a volume of 881mL and a temperature of 18°C?

0.660atm

?18 A balloon filled with oxygen gas occupies a volume of 5.5L at 25°C. What volume will the gas occupy of 100.°C?

6.9L

?19 A 0.700L gas sample at STP is compressed to a volume of 200.mL, and the new temperature is increased to 30.0°C. What is the new pressure of the gas in Pa?

3.94x105Pa

What is the density of chlorine gas at STP? ?20 What is the density of chlorine gas at STP?

3.1g/L

?21 Which law states that the total pressure exerted on the walls of a container equals the sum of the partial pressures of each gas.

Dalton’s Law of Partial Pressures

?22 A 2.07L cylinder contains 2.88mol of helium gas at 22°C. What is the pressure in atmospheres of the gas in the cylinder?

33.7atm

?23 A weather balloon at Earth’s sufrace has a volume of 4.00L at 304K and 755mmHg. If the balloon is released and the volume reaches 4.08L at 728mmHg, what is the temperature?

299K

?24 To what temperature (in Celsius) must a sample of nitrogen at 27°C and 0.625 atm be taken so that its pressure becomes 1.125atm at constant volume?

267°C (540K)

?25 A gas sample of 83°C occupies a volume of 1400m3. At what temperature will it occupy at 1200m3?

0.970kPa

?26 What is the pressure of a mixture of helium, nitrogen, and oxygen if their partial pressures are 600.mmHg, 150.mmHg, and 102mmHg?

852mmHg

Bonus A chemist determines the mass of a sample of gas to be 3.17g. Its volume is 942mL at a temperature of 14°C and a pressure of 1.09atm. What is the molar mass of the gas?

72.7g/mol