Question 1

A 5.0 L container holds a gas at 2.0 atm and 300 K. If the volume is increased to 10.0 L at constant temperature, what will be the new pressure of the gas? (Assume ideal behavior.)

Accepted Answer

$$1.0 \, 	ext{atm}$$

Question 2

Which law explains why a balloon expands when heated at constant pressure?

Accepted Answer

Charles's Law

Question 3

A rigid container of gas is heated from $$300 \, 	ext{K} to$$ $$600 \, 	ext{K} at $$constant volume. What happens to the pressure?

Accepted Answer

It doubles

Question 4

Which equation represents the combined gas law?

Accepted Answer

$$\frac{P_1$ V_1$}{T_1$} = \frac{P_2$ V_2$}{T_2$}$$

Question 5

If the number of moles of gas in a container is doubled at constant temperature and pressure, what happens to the volume?

Accepted Answer

It doubles

Question 6

A 10.0 L cylinder with a movable piston contains 1.0 mol of argon gas at 1.0 atm. If 1.0 mol of neon gas is added at constant temperature and pressure, what will happen to the volume?

Accepted Answer

It will double

Question 7

Which law is best used to explain why the pressure in a car tire increases after driving for a long period?

Accepted Answer

Gay-Lussac's Law

Question 8

A sample of gas occupies $$4.0 \, 	ext{L} at$$ $$1.0 \, 	ext{atm}$$ and $$300 \, 	ext{K}. $$What will be its volume at $$2.0 \, 	ext{atm}$$ and $$300 \, 	ext{K}$$?

Accepted Answer

$$2.0 \, 	ext{L}$$

Question 9

Which of the following is NOT an assumption of the ideal gas law?

Accepted Answer

Gas particles have significant volume

Question 10

A gas sample at $$1.0 \, 	ext{atm}$$ and $$273 \, 	ext{K} is $$heated to $$546 \, 	ext{K} at $$constant pressure. What happens to the volume?

Accepted Answer

It doubles

Question 11

Which law is illustrated when the volume of a gas increases as more gas is added to a flexible container at constant temperature and pressure?

Accepted Answer

Avogadro's Law

Question 12

A scuba tank contains $$12.0 \, 	ext{L} of $$air at $$200 \, 	ext{atm}. If $$the air is released into a balloon at $$1.0 \, 	ext{atm}$$, what is the final volume of the air? (Assume constant temperature.)

Accepted Answer

$$2400 \, 	ext{L}$$

Question 13

Which of the following best describes the relationship between pressure and temperature in Gay-Lussac's Law?

Accepted Answer

Directly proportional

Question 14

A gas at $$2.0 \, 	ext{atm}$$ and $$300 \, 	ext{K} is $$compressed to $$4.0 \, 	ext{atm} at $$constant temperature. What happens to the volume?

Accepted Answer

It halves

Question 15

Which law would you use to solve a problem where the number of moles and temperature are constant, but pressure and volume change?

Accepted Answer

Boyle's Law

Question 16

A gas occupies $$3.0 \, 	ext{L} at$$ $$100 \, 	ext{kPa}$$ and $$273 \, 	ext{K}. $$What will be its volume at $$200 \, 	ext{kPa}$$ and $$273 \, 	ext{K}$$?

Accepted Answer

$$1.5 \, 	ext{L}$$

Question 17

Which of the following scenarios best illustrates Charles's Law?

Accepted Answer

A hot air balloon rising as the air inside is heated

Question 18

If the temperature of a gas is increased at constant volume, what happens to the pressure?

Accepted Answer

It increases

Question 19

Which law is used to explain why the volume of a gas-filled balloon decreases when placed in a freezer?

Accepted Answer

Charles's Law

Question 20

A gas sample at $$1.0 \, 	ext{atm}$$ and $$273 \, 	ext{K} is $$compressed to $$2.0 \, 	ext{atm} at $$constant temperature. What happens to the volume?

Accepted Answer

It halves

Chemistry Gas Laws: Fundamental Relationships and Applications

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