Solutions

Which of the following compounds is soluble?

• AgCl

• Pb(OH)₂

• Na₂CO₃

• Co₂O

• None of the above

Which of the following compounds is insoluble?

• NaCl

• Ba(OH)₂

• Na₂SO₄

• Fe₂O₃

• none of the above

Which of the following compounds is most soluble at higher temperatures?

• A

• B

• C

• D

• E. Cannot tell from graph provided

Tags

NGSS.HS-PS3-4

What is the solute when 10 g of NaCl is dissolved in 100 mL of water?

• NaCl

• Na

• Cl_2

• H₂O

• None of the above

The molarity of a solution is defined as the number of

• moles of solute per liter of solution.

• moles of solute per kg of solution.

• grams of solute per liter of solution.

• moles of solute per kg of solvent.

• grams of solvent per kg of solution.

Tags

NGSS.HS-PS1-5

What is the molarity of a KNO3 solution containing 2.45 mol KNO3 in 500. mL of solution?

• 0.049M

• 204M

• 2.45M

• 0.500M

• 4.90M

What is the molarity of NaOH in a solution containing 40.0g of NaOH in 750. mL of solution?

• 53.3M

• 1.33M

• 0.00133M

• 4.00M

• 0.0533M

Calculate the volume of 0.250 M solution made by dissolving 5.56 g of solid magnesium chloride in water.

• 0.234mL

• 0.250mL

• 1.39mL

• 14.6mL

• 234mL

Which of the following NaCl solutions has the highest concentration of NaCl?

• 0.0175 mol NaCl in 1 L

  of solution

• 0.1 mol NaCl in 1000 mL of solution

• 0.5 mol NaCl in 500 mL of solution

• 0.25 mol NaCl in 200 mL of solution

• All have the same concentration.

How would you safely prepare 500. mL of 1.00 M H₂SO₄ solution from a 12.4 M H₂SO₄ stock solution? Select the best answer.

• Add 40.3 mL of 12.4 M H2SO4 to 500. mL of water.

• Add 12.4 mL of 12.4 M H2SO4 to 500. mL of water.

• Add 40.3 mL of 12.4 M H2SO4 to 459.7 mL of water.

• Add 459.7 mL of H2SO4 to 40.3 mL of 12.4 M water.

• Add 500. mL of H2SO4 to 40.3 mL of 12.4 M water.