Solubility and Saturation Concepts

The video tutorial explains solubility as the maximum amount of solute that can dissolve in a specific amount of solvent, expressed in grams of solute per 100 grams of solvent. It uses a formula to determine if solutions are saturated or unsaturated. The tutorial provides examples at 40 degrees Celsius, where the solubility of potassium bromide is 80 grams per 100 grams of water. It analyzes three examples to identify their saturation levels, concluding that some are unsaturated while others are saturated based on their solute-to-solvent ratios.

What is solubility expressed as?

• Liters of solute per gram of solvent

• Moles of solute per liter of solvent

• Grams of solute per 100 grams of solvent

• Grams of solute per liter of solvent

At 40 degrees Celsius, what is the solubility of potassium bromide in water?

• 120 grams per 100 grams of water

• 100 grams per 100 grams of water

• 80 grams per 100 grams of water

• 60 grams per 100 grams of water

If a solution contains 60 grams of potassium bromide in 100 grams of water, is it saturated or unsaturated?

• Supersaturated

• Unsaturated

• Saturated

• Cannot be determined

What happens when a solution is unsaturated?

• No more solute can dissolve

• More solute can dissolve

• The solution becomes cloudy

• The solute precipitates out

Which of the following solutions is saturated?

• 50 grams of potassium bromide in 100 grams of water

• 25 grams of potassium bromide in 50 grams of water

• 200 grams of potassium bromide in 200 grams of water

• 60 grams of potassium bromide in 100 grams of water

What is the ratio of potassium bromide to water in example C?

• 1:1

• 1:2

• 1:4

• 2:1

In example B, how does the amount of potassium bromide compare to its solubility limit?

• It is below the solubility limit

• It is exactly the solubility limit

• It is at the solubility limit

• It is above the solubility limit

Which example demonstrates a solution that is unsaturated?

• None of the above

• Example C

• Example B

• Example A