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Solutions and Solubility Quiz

Solutions and Solubility: ten practice questions on concentration and dilution, with concepts and calculations. Every answer is explained.

Free, with no sign-up.

ByLelfy Editorial Team

For High school students and adults reviewing the topic.

About 12 minutes. 10 questions.

How does it work?

  1. Choose one answer or enter a number in the stated unit, then check it.
  2. Your first submitted answer counts toward the score. Read the explanation before moving on.
  3. Use the quantities provided. There is no timer.

What will you get?

See your first-attempt score and the calculations behind the numeric answers.

Question 1Which quantity belongs in the denominator when calculating molarity?
Question 2A solution contains 0.050 mol of solute in 250 mL of solution. Find its molarity.

Answers within 0.0001 mol/L of the expected value are accepted.

Question 3How many moles of solute are in 100 mL of a 0.50 mol/L solution?

Answers within 0.0001 mol of the expected value are accepted.

Question 4Use a molar mass of 58.44 g/mol for NaCl. What mass makes 250 mL of 0.100 mol/L NaCl solution?

Answers within 0.001 g of the expected value are accepted.

Question 5Pure water is added to a solution. No solute reacts, escapes, or precipitates. Which quantity stays constant?
Question 6You dilute 25 mL of a 2.0 mol/L stock to a final volume of 250 mL. Find the final concentration.

Answers within 0.0001 mol/L of the expected value are accepted.

Question 7What volume of 1.0 mol/L stock is needed to make 250 mL of a 0.100 mol/L solution?

Answers within 0.01 mL of the expected value are accepted.

Question 8At a fixed temperature, a saturated solution is in contact with excess solid solute at equilibrium. What does saturated mean?
Question 9Use a molar mass of 74.55 g/mol for KCl. How many moles are in 7.455 g of KCl?

Answers within 0.0001 mol of the expected value are accepted.

Question 10To prepare 250 mL of solution from a measured mass of solute, which volume should reach 250 mL?

Answer every question to see and share your score.

Read the topic guide