1 / 10

Solutions & Solubility

Solutions & Solubility. 6.5 Solution Preparation. Solution Preparation from a solid. Standard Solution = a solution for which the precise concentration is known Used in research laboratories and industrial processes Used in chemical analysis and precise control of chemical reactions.

thais
Download Presentation

Solutions & Solubility

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. Solutions & Solubility 6.5 Solution Preparation

  2. Solution Preparation from a solid • Standard Solution = a solution for which the precise concentration is known • Used in research laboratories and industrial processes • Used in chemical analysis and precise control of chemical reactions

  3. Solution Preparation • Equipment needed to prepare a standard solution: • Electronic balance • Volumetric flask

  4. Volumetric Flask

  5. Example • For an acid-base titration, you need to prepare 250 mL of a 0.50 mol/L sodium hydroxide solution

  6. Step 1 • Calculate the number of moles of solute needed.

  7. Step 2 • Calculate the mass of solute needed.

  8. Step 3: The Experimental Procedure Preparing a solution from a solid

  9. Experimental Procedure • Weigh out the required mass of sodium hydroxide in a clean beaker. • Dissolve the solid in 40 – 50 mL of distilled water • Rinse the beaker 2-3 times with small amounts of distilled water and transfer into the volumetric flask • Add distilled water to the flask until the volume is 250 mL • Stopper the flask and mix the contents thoroughly by repeatedly inverting the flask.

  10. Homework • Read pg. 300 – 302 • Do #1, 2, 4a, 5a on pg. 302

More Related