Molarity Practice Worksheet
This worksheet provides practice problems on calculating molarity, preparing solutions, and understanding dilution, suitable for Grade 12 Chemistry students.
Includes
Standards
Topics
Molarity Practice Worksheet
Name:
Date:
Score:
Read each question carefully and show all your work. Use appropriate units and significant figures in your final answers. Round atomic masses to two decimal places (e.g., Na = 22.99 g/mol).
1. Molarity is defined as the number of moles of solute per of solution.
2. To prepare a solution of a specific molarity, one must know the mass of the solute and the final of the solution.
3. The formula for dilution is M1V1 = .
1. What is the molarity of a solution containing 0.50 moles of NaCl in 500 mL of solution?
0.25 M
0.50 M
1.0 M
2.0 M
2. Which of the following pieces of lab equipment is most accurate for measuring the volume of a solution when preparing a standard solution?
Beaker
Erlenmeyer flask
Volumetric flask
Graduated cylinder
1. Calculate the molarity of a solution made by dissolving 25.0 g of potassium hydroxide (KOH) in enough water to make 750 mL of solution.
2. How many grams of sodium chloride (NaCl) are needed to prepare 2.0 L of a 0.75 M solution?
3. If 150 mL of a 2.5 M stock solution of HCl is diluted to a final volume of 500 mL, what is the new molarity of the diluted solution?
1. Increasing the volume of a solution while keeping the moles of solute constant will increase its molarity.
True
False
2. Molarity is temperature-dependent because volume changes with temperature.
True
False
Related Worksheets
Physical and Chemical Properties and Changes
Explore the fundamental concepts of physical and chemical properties and changes through various exercises for Grade 12 Chemistry.
Grade 12 Chemistry: Types of Reactions
A worksheet covering various types of chemical reactions for Grade 12 Chemistry students, including synthesis, decomposition, single displacement, double displacement, combustion, and redox reactions.