Unit 5 Concept 2 Notes - Concentrations of Solutions

Multiple Choice

Which of the following best describes the concept of concentration in a solution?

• The amount of solute dissolved in a given quantity of solvent

• The temperature at which a solution boils

• The color of the solution

• The pressure exerted by the solution

Open Ended

Why is understanding the concentration of solutions important in chemistry and everyday life?

Multiple Choice

Which of the following best describes a concentrated solution?

• A solution with a large amount of solute dissolved in solvent

• A solution with a small amount of solute dissolved in solvent

• A solution with no solute

• A solution with only solvent

Fill in the Blanks

Fill in the blank: Molarity (M) is defined as the number of moles of solute per

of solution.

Multiple Select

Which of the following are required to calculate the mass of NaCl needed to make a specific molarity solution?

• Volume of solution

• Desired molarity

• Molar mass of NaCl

• Temperature of the solution

Open Ended

Find the molarity of a solution of 58.0 g of AgNO3 dissolved in 1.00 L of solution.

Fill in the Blanks

Fill in the blank: Molality (m) is defined as the number of moles of solute per

of solvent.

Multiple Choice

What is the molality of a solution made by dissolving 16.7 g of glucose (C6H12O6) in 125 g of water?

• 0.742 mol/kg

• 0.125 mol/kg

• 0.0927 mol/kg

• 1.34 mol/kg

Multiple Choice

Which of the following best defines molality?

• Moles of solute per kg of solvent

• Moles of solute per liter of solution

• Grams of solute per kg of solvent

• Grams of solute per liter of solution

Fill in the Blanks

Fill in the blank: The equation for dilution is M1V1 =

V2.

Multiple Choice

Which of the following actions will decrease the concentration of a solution?

• Adding more solvent

• Removing solvent

• Adding more solute

• Evaporating solvent

Multiple Choice

After adding 50 mL of water to 125 mL of 0.15 M NaOH solution, what is the new molarity of the solution?

• 0.107 M

• 0.150 M

• 0.200 M

• 0.075 M

​ODD ONLY!!!!!

Open Ended

What is one key concept you learned about concentrations of solutions during this lesson?