Solutions and Concentration Practice

8 problems · instant feedback · full explanations

Solution concentration shows up in almost every chemistry lab. These eight problems cover molarity calculations, dilutions, molality, and colligative properties.

Q1.
What is the molarity of a solution made by dissolving 1.00 mol of NaCl in enough water to make 2.00 L?

Numerical answer (M) · Easy

Q2.
50.0 mL of 6.00 M HCl is diluted with water to a final volume of 500 mL. What is the new molarity?

Numerical answer (M) · Easy

Q3.
Molarity is expressed in units of:

Multiple choice · Beginner

Q4.
Adding more solvent to a solution decreases its molarity.

True / False · Easy

Q5.
In salt water, the solute is:

Multiple choice · Beginner

Q6.
How many grams of NaCl are needed to prepare 0.250 L of 2.00 M solution? (Molar mass NaCl = 58.44 g/mol)

Numerical answer (g) · Medium

Q7.
Molality changes with temperature because the solution volume changes.

True / False · Hard

Q8.
Which of these is a colligative property?

Multiple choice · Easy

Solutions and Concentration Practice

Q1. What is the molarity of a solution made by dissolving 1.00 mol of NaCl in enough water to make 2.00 L?

Q2. 50.0 mL of 6.00 M HCl is diluted with water to a final volume of 500 mL. What is the new molarity?

Q3. Molarity is expressed in units of:

Q4. Adding more solvent to a solution decreases its molarity.

Q5. In salt water, the solute is:

Q6. How many grams of NaCl are needed to prepare 0.250 L of 2.00 M solution? (Molar mass NaCl = 58.44 g/mol)

Q7. Molality changes with temperature because the solution volume changes.

Q8. Which of these is a colligative property?