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Gas Laws and Pressure Relationships Quiz

#1

Which gas law describes the relationship between pressure and volume at constant temperature?

Boyle's Law
Explanation

In Boyle's Law, the pressure of a gas is inversely proportional to its volume when temperature is held constant.

#2

According to Boyle's Law, if the volume of a gas decreases, what happens to its pressure?

Increases
Explanation

As per Boyle's Law, when the volume of a gas decreases, its pressure increases.

#3

What is the SI unit of pressure?

Pascal (Pa)
Explanation

The SI unit of pressure is the Pascal (Pa), named after Blaise Pascal.

#4

According to Charles's Law, if the temperature of a gas increases, what happens to its volume?

Increases
Explanation

Charles's Law states that when the temperature of a gas increases, its volume also increases.

#5

What is the unit of temperature used in gas laws?

Kelvin (K)
Explanation

The unit of temperature used in gas laws is the Kelvin (K), where 0 K is absolute zero.

#6

What is the ideal gas law equation?

PV = nRT
Explanation

The ideal gas law equation is PV = nRT, where P is pressure, V is volume, n is the number of moles, R is the gas constant, and T is temperature.

#7

Which gas law describes the relationship between temperature and volume at constant pressure?

Charles's Law
Explanation

Charles's Law states that the volume of a gas is directly proportional to its temperature at constant pressure.

#8

What is the combined gas law equation?

P1V1/T1 = P2V2/T2
Explanation

The combined gas law equation is P1V1/T1 = P2V2/T2, expressing the relationship between pressure, volume, and temperature for a gas.

#9

Which gas law states that equal volumes of gases at the same temperature and pressure contain equal numbers of molecules?

Avogadro's Law
Explanation

Avogadro's Law asserts that equal volumes of gases at the same temperature and pressure have an equal number of molecules.

#10

What is the standard temperature and pressure (STP) in the context of gas laws?

0°C and 1 atm
Explanation

STP, or standard temperature and pressure, is defined as 0°C and 1 atmosphere pressure.

#11

Under what conditions do real gases behave most like ideal gases?

Low pressure, high temperature
Explanation

Real gases behave most like ideal gases under conditions of low pressure and high temperature.

#12

Which gas law states that the total pressure of a mixture of gases is equal to the sum of the partial pressures of the individual gases?

Dalton's Law of Partial Pressures
Explanation

Dalton's Law of Partial Pressures asserts that the total pressure of a gas mixture is the sum of the partial pressures of its individual gases.

#13

What is the significance of the gas constant (R) in the ideal gas law equation?

It incorporates the properties of the gas
Explanation

The gas constant (R) in the ideal gas law equation accounts for the properties of the gas being measured.

#14

What does Graham's Law of Effusion describe?

The relationship between the diffusion rates of two gases
Explanation

Graham's Law of Effusion describes the relationship between the diffusion rates of two gases, which is inversely proportional to the square root of their molar masses.

#15

What does Henry's Law describe?

The relationship between solubility and pressure of a gas in a liquid
Explanation

Henry's Law describes the relationship between the solubility of a gas in a liquid and the partial pressure of the gas above the liquid.

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