Exploring Solutions and Their Properties

What is the primary solvent in the air?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Argon

Which property does NOT directly affect a substance's solubility?

• Molecular Structure

• Color

• Pressure

• Temperature

What does molarity measure?

• Number of moles of solute per kilogram of solvent

• Volume of solute per mass of solution

• Number of moles of solute per liter of solution

• Mass of solute per volume of solution

What is the mass percent of sugar in a can of soda with 33 grams of sugar and a total mass of 355 grams?

• 8.5%

• 10.3%

• 9.2%

• 11%

Why can't every solvent dissolve every solute?

• Because of the solute's color

• Because of the solvent's temperature

• Due to the gravitational pull

• Due to the molecular interaction and structure

What makes tetrodotoxin dangerous to humans?

• Its taste

• Its color

• Its ability to bind to sodium channels

• Its nonpolar structure

How is carbon dioxide dissolved in water to make soda?

• By increasing the pressure of CO2 outside the liquid

• By using a catalyst

• By adding more solute

• By decreasing the temperature

According to Henry's Law, what determines the concentration of a dissolved gas?

• The temperature of the solution

• The gas's color

• The partial pressure of the gas above the solution

• The molecular structure of the gas

Why does the solubility of gases decrease with an increase in temperature?

• Because molecules have less kinetic energy

• Because gases expand

• Because molecules move slower

• Because molecules have more kinetic energy and are more likely to escape the liquid

What happens to the solubility of oxygen in water as the temperature increases?

• It decreases

• It increases

• It fluctuates unpredictably

• It remains the same