CP U12 Solutions

What is the difference between a strong electrolyte and a weak electrolyte?

• Strong electrolytes partially dissociate into ions in solution, while weak electrolytes completely dissociate.

• Strong electrolytes completely dissociate into ions in solution, while weak electrolytes partially dissociate.

• Strong electrolytes do not dissociate at all, while weak electrolytes completely dissociate.

• Strong electrolytes and weak electrolytes are the same in terms of dissociation.

What is a precipitate?

• A gas that forms when two liquids are mixed.

• An insoluble solid that forms when two solutions are mixed.

• A liquid that evaporates when heated.

• A colorless solution that has no solid components.

What factors can increase the rate of dissolution of a solid in a liquid?

• Stirring, increasing temperature, and increasing surface area of the solid.

• Decreasing temperature and pressure.

• Using a larger solid piece without stirring.

• Adding more solid to the liquid without stirring.

What is the effect of temperature on solubility?

• Increasing temperature decreases the solubility of solids in liquids.

• Increasing temperature has no effect on the solubility of solids in liquids.

• Generally, increasing temperature increases the solubility of solids in liquids.

• Increasing temperature decreases the solubility of gases in liquids.

What should be done to make a powder dissolve faster in a liquid?

• Stir the powder in the liquid.

• Add more powder to the liquid.

• Use a colder liquid.

• Leave the powder undisturbed.

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO3 to a volume of 250 mL?

• 0.636 M

• 0.500 M

• 0.750 M

• 0.800 M

What happens to the number of particles when a molecular compound like CH3OH dissolves in water?

• It increases as it dissociates into ions.

• It remains as one particle because it does not dissociate into ions.

• It decreases as it forms a solid.

• It remains the same but changes state.

Which of the following is a non-electrolyte: CaO, NaOH, BaCl2, Br2?

• CaO

• NaOH

• BaCl2

• Br2

Which reaction does NOT form a precipitate: Pb(NO3)2(aq) + 2KI(aq) →, Sr(NO3)2(aq) + K2SO4(aq) →, AgNO3(aq) + Na2S(aq) →, Pb(NO3)2(aq) + AgNO3(aq) →?

• Pb(NO3)2(aq) + 2KI(aq) →

• Sr(NO3)2(aq) + K2SO4(aq) →

• AgNO3(aq) + Na2S(aq) →

• Pb(NO3)2(aq) + AgNO3(aq) →

How do you calculate the molarity of a diluted solution?

• Molarity (M) = (Molarity of concentrated solution) x (Volume of concentrated solution) / (Total volume of diluted solution)

• Molarity (M) = (Total volume of diluted solution) / (Molarity of concentrated solution) x (Volume of concentrated solution)

• Molarity (M) = (Volume of concentrated solution) / (Molarity of diluted solution) x (Total volume of diluted solution)

• Molarity (M) = (Molarity of diluted solution) x (Total volume of diluted solution) / (Volume of concentrated solution)