Molarity and Dilution Worksheet
This worksheet covers fundamental concepts of molarity and dilution, including calculations and understanding of solution concentrations for Grade 9 Science.
Includes
Standards
Topics
Molarity and Dilution Practice
Name:
Date:
Score:
Read each question carefully and provide honest answers. Show all your work for calculation problems.
1. What is the definition of molarity?
Moles of solute per liter of solvent
Grams of solute per liter of solution
Moles of solute per liter of solution
Grams of solute per 100 mL of solution
2. Which of the following equations is used for dilution calculations?
M1V1 = M2V2
M = moles/volume
PV = nRT
pH = -log[H+]
3. Molarity is a measure of the of a solution.
4. When diluting a solution, the amount of remains constant.
5. Calculate the molarity of a solution made by dissolving 2.5 moles of NaCl in 500 mL of water.
6. A 2.0 M solution of HCl has a volume of 250 mL. If it is diluted to 1.0 L, what is the new molarity?
7. Adding more solvent to a solution increases its molarity.
True
False
8. Molarity is expressed in units of moles per liter.
True
False
9. If you add 100 mL of water to the beaker shown, how would the molarity of the solution change? (Assume the beaker originally contained a solution)