Solubility and Solution Concepts

The video tutorial explains the concept of solution saturation, including saturated, unsaturated, and super saturated solutions. It uses examples like Kool-Aid and potassium nitrate to illustrate these concepts. The tutorial also discusses how to read solubility graphs to determine the saturation level of a solution. Additionally, it covers the process of creating super saturated solutions by heating, commonly used in candy making.

What does it mean when a solution is saturated?

• The solvent has dissolved all the solute it can hold.

• The solvent can dissolve more solute.

• The solution is heated to a high temperature.

• The solute is not dissolving at all.

In the Kool-Aid example, what happens when you add too much sugar?

• The solution becomes a gas.

• The sugar stops dissolving.

• The water becomes unsaturated.

• The sugar dissolves completely.

On a solubility graph, what does the line for each chemical represent?

• The amount of solvent.

• The color of the solution.

• The temperature of the solution.

• The point of saturation.

At 15°C, what is the maximum amount of potassium iodide that can dissolve in 100g of water?

• 165g

• 150g

• 160g

• 155g

What does it mean if a solution is unsaturated?

• It cannot dissolve any more solute.

• It can dissolve more solute.

• It is at its boiling point.

• It is a solid.

If 70g of potassium nitrate is dissolved at 60°C, what type of solution is it?

• Solid

• Super saturated

• Unsaturated

• Saturated

How much more potassium nitrate can be dissolved at 60°C if 70g is already dissolved?

• 30g

• 40g

• 50g

• 60g

What is a super saturated solution?

• A solution that is cooled down.

• A solution that is at room temperature.

• A solution that is unsaturated.

• A solution that holds more solute than it normally can.

How is a super saturated solution typically formed?

• By cooling the solution.

• By adding more solvent.

• By stirring the solution.

• By heating the solution.

On a solubility graph, where would you find a super saturated solution?

• Below the line

• Above the line

• On the line

• At the origin