Unit 3.3 Review

Multiple Choice

Which best describes a solute?

• part of solution present in the largest amount

• the substance that gets dissolved
• the substance that does the dissolving
• surrounds and breaks apart

Multiple Choice

What will allow more of a solid solute to be dissolved in a liquid solvent?

• increasing pressure

• stirring

• cooling

• heating

Multiple Choice

Which of the following usually makes a substance dissolve faster in a solvent?

• agitating the solution
• increasing the particle size of the solute
• lowering the temperature
• decreasing the number of particles

Multiple Choice

What kind of solution can dissolve more solute at the given temperature?

• Saturated
• Unsaturated
• Supersaturated
• Homogeneous solution

Multiple Choice

When a solvent contains as much of the solute as it can hold, the solution is said to be

• supersaturated
• diluted
• saturated
• unsaturated

Multiple Choice

When 20 grams of potassium chlorate, KClO₃, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:

• supersaturated
• saturated
• unsaturated

Multiple Choice

How many moles of NaCl are needed to make 2.5 L of a 3.8 M solution? 

• 9.5 mol
• 0.66 mol
• 1.5 mol
• 15 mol

Multiple Choice

What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to 500 mL?

• 300. M

• 31.3 M
• 3.13 M
• 1.56 M