Quiz: Solutions and Molarity

What does "like dissolves like" mean?

• polar solvents dissolve in polar solutes

• polar solutes dissolve in polar solvents

• non-polar solvents dissolve in polar solutes

• non-polar solutes dissolve in polar solvents

Capable of being dissolved

• Soluble
• concentration
• colloid
• molarity

Octane (C₈H₁₈- nonpolar hydrocarbon) and water

• Soluble (miscible)

• Insoluble (immiscible)

• Partially soluble

Toluene (C₆H₅CH₃ - polar) in chloroform (CHCl₃ - polar)

• Soluble (miscible)

• Insoluble (immiscible)

• Partially soluble

Napthalene (C₁₀H₈) in water

• Soluble (miscible)

• Insoluble (immiscible)

• Partially soluble

Sodium hydroxide (NaOH) in water

• Soluble (miscible)

• Insoluble (immiscible)

• Partially soluble

What is the molarity of 1.2 moles of CaCO₃ in 1.22 L of solution?

• 0.98 M

• 9.8 M

• 5.11 M

• 0.16 M

What two variables are used to calculate Molarity?

• moles and liters

• moles and milliliters

• grams and liters

• grams and milliliters

How many grams of K₂CO₃ are needed to make 200 mL of a 2.5 M solution? (Hint MM of K₂CO₃= 138.204 g/mol)

• 69102 g

• 69.102 g

• 0.5 g

• 500 g

What are the units for Molarity?

• n

• m

• M

• N