SME
Grade 10 Science
Solutions: solubility, concentration and molarity
The main lesson, then each kind of problem it solves.
Solutions: solubility, concentration and molarity
Main lesson
Molarity from grams of solute
Use this for “5.844 g of NaCl (58.44 g/mol) makes 250 mL of solution. What is the molarity?”
Diluting a stock solution
Use this for “How much 2.00 M stock makes 200 mL of 0.500 M, and how much water is added?”
Reading a solubility curve
Use this for “50 g of KNO₃ is stirred into 100 g of water at 40 °C. Is it saturated?”
Percent by mass
Use this for “15 g of sugar is dissolved in 135 g of water. What is the percent sugar by mass?”