Solutions Practice Quiz

Sample A contains pure solvent while Sample B contains a solute dissolved in the same solvent. How do the boiling points of the two samples compare?

• Sample A has a higher boiling point than Sample B

• Samples A and B have the same boiling point

• Sample B has a higher boiling point than Sample A

• There is not enough information

What is the molarity of a solution that contains 0.202 mol KCl in 7.98 L solution?

• 0.0132 M

• 0.0253 M

• 0.459 M

• 1.363 M

Which of the following does not increase the rate of dissolving a solid in water?

• Raising the temperature of the water

• Using larger pieces of solid

• Stirring the solution

• Crushing the solid

Tags

NGSS.HS-PS1-5

Which of the following formulas would be the correct setup to find the percent by mass of NaCl of a solution that contains 17.5 g NaCl in 500 g of water?

• (17.5/500) x 100

• (17.5/100) x 500

• (500/17.5) x 100

• (500-17.5/500) x 100

In a glass of sugar water, which substance is the solute?

• Water

• Glass

• Sugar

• None of these

Using the solubility curve, classify a solution containing 60 g of KNO₃ in 100 g of water at 50°C.

• Saturated

• Supersaturated

• Unsaturated

• Not enough information

Colligative properties depend on the

• Number of solute particles present

• Mass of solute particles present

• Size of solute particles present

• Charge on solute particles present

Sample A contains pure solvent while Sample B contains a solute dissolved in the same solvent. How do the freezing points of the two samples compare?

• Sample A has a lower freezing point than Sample B

• Samples A and B have the same freezing point

• Sample B has a lower freezing point than Sample A

• There is not enough information

Sample A contains pure solvent while Sample B contains a solute dissolved in the same solvent. How do the vapor pressures of the two samples compare?

• Sample A has a lower vapor pressure than Sample B

• Samples A and B have the same vapor pressure

• Sample B has a lower vapor pressure than Sample A

• There is not enough information

The purpose of putting salt on the roads when it is raining in the winter time so to

• Increase the temperature

• Add traction to the road

• Decrease the temperature

• Evaporate the water

Tags

NGSS.HS-PS3-4