Gas Solubility and Constants

The video tutorial explains how solubility of gases, specifically nitrogen, is affected by atmospheric pressure. It begins by introducing the concept of solubility as a function of pressure, using nitrogen gas as an example. The tutorial details the solubility of nitrogen at 25 degrees centigrade and 1 atmosphere, and derives the solubility constant (k). It then demonstrates how to calculate the solubility of nitrogen under different pressure conditions, using the partial pressure of nitrogen in the atmosphere.

What percentage of Earth's atmosphere is composed of nitrogen gas?

• 21%

• 78%

• 50%

• 100%

At what temperature and pressure is the solubility of nitrogen gas given?

• 25°C and 1 atm

• 0°C and 1 atm

• 100°C and 2 atm

• 50°C and 0.5 atm

What is the solubility of nitrogen gas at 25°C and 1 atmosphere?

• 7.8 x 10^-4 moles/L

• 8.8 x 10^-4 moles/L

• 6.8 x 10^-4 moles/L

• 5.3 x 10^-4 moles/L

How is the solubility constant (k) for nitrogen gas calculated?

• Concentration divided by pressure

• Pressure divided by concentration

• Pressure multiplied by temperature

• Temperature divided by pressure

What is the value of the solubility constant (k) for nitrogen gas under standard conditions?

• 8.8 x 10^-4 moles/L atm

• 5.3 x 10^-4 moles/L atm

• 7.8 x 10^-4 moles/L atm

• 6.8 x 10^-4 moles/L atm

What is the partial pressure of nitrogen gas in the atmosphere?

• 1.0 atm

• 0.5 atm

• 0.78 atm

• 0.21 atm

How do you calculate the solubility of a gas under different pressure conditions?

• Subtract k from the new pressure

• Add k to the new pressure

• Divide k by the new pressure

• Multiply k by the new pressure

What is the solubility of nitrogen gas in the atmosphere at 25°C?

• 8.8 x 10^-4 moles/L

• 7.8 x 10^-4 moles/L

• 6.8 x 10^-4 moles/L

• 5.3 x 10^-4 moles/L

What is the significance of the solubility constant (k) in gas solubility calculations?

• It measures the volume of gas

• It indicates the color of the gas

• It is used to calculate solubility at different pressures

• It determines the temperature of the gas

Why is it important to know the partial pressure of a gas in solubility calculations?

• To determine the gas's color

• To calculate the gas's solubility

• To measure the gas's volume

• To find the gas's temperature