Question 1

Which equation represents the Ideal Gas Law?

Accepted Answer

$$P V = n R T$$

Question 2

Boyle's Law describes the relationship between which two variables when temperature and amount of gas are held constant?

Accepted Answer

Pressure and volume

Question 3

According to Boyle's Law, if the volume of a gas is doubled at constant temperature, what happens to the pressure?

Accepted Answer

It is halved

Question 4

Gay-Lussac's Law states that pressure and temperature are directly proportional at constant volume. Which formula represents this law?

Accepted Answer

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

Question 5

A sealed container with a movable piston contains a gas with a pressure of 1380 torr, a volume of 820 mL, and a temperature of 31°C. What would the volume be if the new pressure is 2.83 atm, while the temperature decreased to 25°C? (Use $$1~	ext{atm} = 760~	ext{torr})$$

Accepted Answer

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

Question 6

Which gas law would you use to determine the change in volume when the amount of gas is increased at constant temperature and pressure?

Accepted Answer

Avogadro's Law

Question 7

Charles's Law states that volume and temperature are directly proportional at constant pressure. Which formula represents this law?

Accepted Answer

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

Question 8

A 10.0 L cylinder with a movable piston contains 10.0 g of xenon gas. When an additional 10.0 g of xenon gas is added, the volume increases. Which law is used to justify this result?

Accepted Answer

Avogadro's Law

Question 9

If the temperature of a gas in a sealed container is increased while the volume remains constant, what happens to the pressure?

Accepted Answer

It increases

Question 10

Which of the following is a real-life application of Boyle's Law?

Accepted Answer

A syringe drawing liquid when the plunger is pulled back

Question 11

A 10.0 L cylinder exerts 3.00 atm of pressure. What will happen to the pressure if the volume of the container increases to 20.0 L, assuming temperature and amount of gas are constant?

Accepted Answer

It will decrease by half

Question 12

Which variable must be measured in Kelvin for all gas law calculations?

Accepted Answer

Temperature

Question 13

If the pressure of a gas is kept constant and the temperature is doubled, what happens to the volume according to Charles's Law?

Accepted Answer

It doubles

Question 14

Which law explains why a hot air balloon rises when the air inside is heated?

Accepted Answer

Charles's Law

Question 15

A gas sample at 1.00 atm and 273 K occupies 22.4 L. If the temperature is increased to 546 K at constant pressure, what is the new volume?

Accepted Answer

44.8 L

Question 16

Which law would you use to calculate the pressure exerted by a gas if you know its volume, temperature, and amount in moles?

Accepted Answer

Ideal Gas Law

Question 17

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

Accepted Answer

It doubles

Question 18

Which of the following statements about Avogadro's Law is correct?

Accepted Answer

Volume is directly proportional to the number of moles at constant temperature and pressure

Question 19

A gas sample is compressed from 500 mL to 250 mL at constant temperature. What happens to the pressure?

Accepted Answer

It doubles

Question 20

Which of the following is NOT a variable in the Ideal Gas Law?

Accepted Answer

Density

Fundamental Chemistry Gas Laws: Study Notes and Practice

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