1 / 5

Concentration Calculations

Concentration Calculations. Percent by Mass. Concentrated vs. Dilute. Concentrated means that a solution has a relatively large amount of solute. If you make a dilute solution of Kool-Aid, it will taste strong . Dilute means that a solution has a relatively small amount of solute.

egil
Download Presentation

Concentration Calculations

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Concentration Calculations Percent by Mass

  2. Concentrated vs. Dilute • Concentrated means that a solution has a relatively large amount of solute. • If you make a dilute solution of Kool-Aid, it will taste strong. • Dilute means that a solution has a relatively small amount of solute. • If you make a dilute solution of Kool-Aid, it will taste weak.

  3. Concentration • A measure of the amount of solute in a given amount of solvent of solution. • Concentration can be measured in several ways: • Molarity • Molality • Percent by Volume • Percent by Mass

  4. Percent by Mass Percent by Mass = X 100 Grams of Solution = Mass of Solute + Mass of Solvent

  5. Solving Percent by Mass Problems What is the percent by mass of a salt-water solution that contains 15.5 g of NaCl dissolved in 95.5g of water? • Step 1: Identify a solute and a solvent. • Solute = NaCl (15.5 g) • Solvent = Water (95.5 g) • Step 2: Find the mass of the solution (solute + solute). • 15.5 + 95.5 = 111 g • Step 3: Use the formula to compute the percentage by mass. • Percent by Mass = X 100 = 14.0% NaCl

More Related