Solubility and Temperature Relationships

Robin Higgins explains how to determine solubility using graphs, focusing on the relationship between temperature and solubility. The video covers solubility curves for different solutes like sodium chloride and potassium nitrate, highlighting how intermolecular forces affect solubility. The tutorial concludes with practical applications of solubility graphs.

What are the two axes typically found on a solubility graph?

• Mass and Density

• Pressure and Volume

• Temperature and Solubility

• Concentration and Time

Why does solubility generally increase with temperature?

• Molecules move slower at higher temperatures.

• Molecules have more energy and move faster at higher temperatures.

• The solute becomes heavier at higher temperatures.

• The solvent becomes denser at higher temperatures.

What is the solubility of sodium chloride at 100 degrees Celsius?

• 10 grams per 100 cm³

• 35 grams per 100 cm³

• 40 grams per 100 cm³

• 70 grams per 100 cm³

Which solute starts with a lower solubility than sodium chloride but rises significantly by 100 degrees Celsius?

• Potassium Nitrate

• Sodium Nitrate

• Potassium Chloride

• Calcium Carbonate

At what temperature does the solubility curve for water end?

• 50 degrees Celsius

• 75 degrees Celsius

• 100 degrees Celsius

• 150 degrees Celsius

What happens to water at temperatures above 100 degrees Celsius in the context of solubility?

• It becomes a solid.

• It remains a liquid.

• It becomes a gas.

• It becomes more soluble.

Which solute has the most dramatic increase in solubility with temperature?

• Sodium Nitrate

• Sodium Chloride

• Potassium Nitrate

• Potassium Chloride

Which solute starts at a solubility of over 70 grams per 100 cm³?

• Potassium Nitrate

• Potassium Chloride

• Sodium Nitrate

• Sodium Chloride

What is the primary factor that causes differences in solubility curves among different solutes?

• Shape of the solute particles

• Color of the solute

• Intermolecular and intramolecular forces

• Size of the solute particles

How can you determine the solubility of a solute at a specific temperature using a graph?

• By calculating the density of the solution

• By picking a point on the graph at the desired temperature

• By looking at the color of the solution

• By measuring the mass of the solute