Like dissolves Like and Solubility

Which of the following statements best describes the principle of "like dissolves like" in terms of solubility?

• Polar solvents dissolve nonpolar solutes.

• Nonpolar solvents dissolve polar solutes.

• Polar solvents dissolve polar solutes.

• Nonpolar solvents dissolve ionic compounds.

Which of the following pairs of substances is most likely to be miscible based on their polarity?

• Water and oil

• Ethanol and water

• Hexane and water

• Vinegar and oil

Tags

NGSS.HS-PS2-6

How does increasing temperature generally affect the solubility of a solid in a liquid?

• Solubility decreases with increasing temperature.

• Solubility remains constant with increasing temperature.

• Solubility increases with increasing temperature.

• Solubility is not affected by temperature.

What is the primary reason that oil and water do not mix?

• Oil is denser than water.

• Oil is polar and water is nonpolar.

• Oil is nonpolar and water is polar.

• Oil has a higher boiling point than water.

Which of the following best describes the effect of temperature on the solubility of gases in liquids?

• Solubility of gases increases with increasing temperature.

• Solubility of gases decreases with increasing temperature.

• Solubility of gases is unaffected by temperature.

• Solubility of gases is highest at room temperature.

Why does salt (NaCl) dissolve in water but not in oil?

• Salt is nonpolar and oil is polar.

• Salt forms hydrogen bonds with oil.

• Salt is ionic and water is polar.

• Salt is polar and oil is nonpolar.

Liquid substances that dissolve in each other are to be called:

• solutions

• insoluble

• miscible

• viscous

Which factor is most likely to increase the solubility of a solid solute in a liquid solvent?

• Decreasing the temperature

• Adding more solute

• Increasing the pressure

• Stirring the solution

Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent? 

• purity
• polarity

• high heat capacity
• expansion upon freezing

Tags

NGSS.HS-ESS2-5

What is the effect of grinding a solid solute into a fine powder on its solubility in a liquid solvent?

• It decreases the solubility by reducing surface area.

• It increases the solubility by increasing surface area.

• It makes the solute insoluble.

• It has no effect on solubility.