Unit 10 Exam

Which will NOT make a solid substance dissolve faster?

• Decrease temperature

• Decrease particle size

• Stirring the solution

Which is NOT a unit on the solubility chart?

• Grams of Solute

• Grams of Solvent

• Grams of solvation

• Temperature in degrees C

What is the molarity of a solution containing 4 moles dissolved in 7 L of solution

• 0.57 M

• 0.57 mL

• 1.75 M

• 1.75 mL

What is the Molarity of a solution containing 6 moles dissolved in 800 mL?

• 0.0075 M

• 0.75 M

• 7.5 M

• 75.0 M

When a crystal of solute is added to a clear aqueous solution, the solution becomes solid and look like snow. The solution is

• Saturated

• Unsaturated

• Supersaturated

• Solvated

Gases dissolve better at

• Higher pressure

• Warmer temperatures

• Colder temperatures

• When you open the lid of your soda can

Which describes solvation?

• Dish soap dissolves nonpolar molecules

• Oil does not dissolve in water

• NaCl sits out before adding it to water

• NaCl particles are surrounded by water particles

Which describes polarity?

• Apple juice is a homogenous mixture

• Polar molecules like water dissolve other polar molecules

• Nonpolar molecules dissolve polar molecules

• Nonpolar molecules are surrounded by polar molecules

In a 7.0 M solution of nitric acid dissolved in 450 mL of solution, how many moles of nitric acid do you have?

• 3150 moles

• 15.6 moles

• 3.15 moles

• 0.0156 moles

If I add ______ to a solution, it WILL conduct an electric current

• Electrolyte

• Nonelectrolyte

• Solvent

• Covalent compound