Solutions and Molarity Review

A newly synthesized covalent compound is placed in water to make an aqueous solution. Which best describes the new covalent solution?

• The covalent solution conducts electricity.

• The covalent solution dissolves nonpolar solutions.

• The covalent solution cannot conduct electricity.

• The covalent solution is a neutral solution.

Will gasoline dissolve in carbon tetrachloride or water? (Hint: Determine if the substance is polar or nonpolar.)

• carbon tetrachloride

• water

Why is potassium chloride able to dissolve in water?

• because potassium ions are attracted to the partial negative charge of hydrogen

• because potassium ions are attracted to the partial negative charge of hydrogen

• because potassium ions are attracted to the partial negative charge of oxygen

• because potassium ions are attracted to the partial positive charge of oxygen

Tags

NGSS.HS-ESS2-5

Which type of chemical bond form electrolytic solutions?

• polar covalent

• nonpolar covalent

• ionic

• metallic

Using the solubility graph above, how many grams of NH₄Cl will dissolve in 100 g of water at 50 deg. C?

• 50 g

• 100 g

• 75 g

• 41 g

Using the solubility curve below, how many grams of KClO₃ will dissolve in 300 g of water at 50 deg. C?

• 20 g

• 41 g

• 60 g

• 80 g

Using the solubility curve below, how much KNO₃ will precipitate out if the solution is cooled from 50 deg C to 40 deg. C?

• 80 g

• 62 g

• 18 g

• 100 g

Tags

NGSS.HS-PS3-4

Using the solubility curve below, if you have a solution of 60 g of NH₃ at 10 deg. C is it saturated, unsaturated, or supersaturated?

• saturated

• unsaturated

• supersaturated

What is the relationship between solubility of a gas and temperature? (Hint: Think about what you do to soda to keep it from going flat.)

• direct

• inverse

If you have 5.00 mL of a 6.00 M HCl solution, what concentration will it be if 14.00 mL of water is added?

• 2.14 M

• 11.7 M

• 16 M

• 79 M