Solubility and Sodium Chloride Concepts

This video tutorial covers solubility calculations, focusing on molar solubility and the effect of temperature on solubility. It provides four examples using sodium chloride to demonstrate different types of solubility calculations: calculating molar solubility, determining the amount of solute that can dissolve in a given volume, finding the volume needed to dissolve a specific mass, and identifying whether a solution is saturated or unsaturated.

What is molar solubility?

• The concentration of a solution expressed in moles per liter.

• The temperature at which a solute becomes insoluble.

• The amount of solute that can dissolve in a solvent at a specific temperature.

• The weight of solute in grams that can dissolve in a liter of solvent.

How does temperature affect solubility?

• Temperature has no effect on solubility.

• Decreasing temperature always increases solubility.

• Increasing temperature always decreases solubility.

• Increasing temperature can increase or decrease solubility.

What is the molar mass of sodium chloride used in the calculation?

• 100.00 grams per mole

• 35.45 grams per mole

• 22.99 grams per mole

• 58.44 grams per mole

How many moles of sodium chloride are in 360 grams?

• 5.00 moles

• 6.16 moles

• 4.50 moles

• 7.20 moles

How many grams of sodium chloride can dissolve in 300 milliliters of water?

• 150 grams

• 108 grams

• 90 grams

• 120 grams

What is the solubility of sodium chloride in water in grams per liter?

• 400 grams per liter

• 300 grams per liter

• 250 grams per liter

• 360 grams per liter

How many milliliters of water are needed to dissolve 13.6 grams of sodium chloride?

• 25.00 milliliters

• 100.00 milliliters

• 50.00 milliliters

• 37.78 milliliters

What is the solubility ratio of sodium chloride in grams per milliliter?

• 0.36 grams per milliliter

• 0.50 grams per milliliter

• 0.40 grams per milliliter

• 0.25 grams per milliliter

What does it mean if a solution is unsaturated?

• It cannot dissolve any more solute.

• It contains more solute than the maximum solubility.

• It contains less solute than the maximum solubility.

• It has reached the maximum solubility.

How can you determine if a solution is saturated?

• By checking the color of the solution.

• By measuring the temperature of the solution.

• By observing the pH level of the solution.

• By comparing the solute amount to the solubility limit.