1 / 12

Concentration & Molarity

Concentration & Molarity. Concentration. The concentration of a solution is an indication of how much solute there is dissolved into the solvent. High concentration means a high amount of solute dissolved in a solvent

latham
Télécharger la présentation

Concentration & Molarity

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 & Molarity

  2. Concentration • The concentration of a solution is an indication of how much solute there is dissolved into the solvent. • High concentration means a high amount of solute dissolved in a solvent • Low concentration means a low amount of solute dissolved in a solvent

  3. Color & Concentration

  4. Molarity • M is the symbol for molarity • 6 M HCl – said “six molar solution of hydrochloric acid” • Units are mol solute L solution **Solution = solute + solvent

  5. Calculating Molarity What is the molarity of a potassium chloride solution that has a volume of 400.0mL and contains 85.0 g of potassium chloride?

  6. Vinegar contains 5.0g of acetic acid, CH3COOH, in 100.0 mL of solution. Calculate the molarity of this solution.

  7. If your teacher asks you to prepare 1.00 L of a 0.500 M solution of NaCl, how many grams of NaCl would it contain?

  8. Molarity and Stoichiometry • Many times in the lab, chemists are dealing with solutions rather than dry chemicals • So the chemicals are measured out in volumes instead of by mass

  9. What volume in mL of a 0.500 M solution copper II sulfate is needed to react with an excess of aluminum to provide 11.0 g of copper? Bal. eqtn.

  10. Commercial HCl is 12.0 M. Was is the mass of HCl in 250.0 mL of solution?

  11. Other Units of Concentration Molality = m = mol solute kg solvent Parts per million = ppm = g solute 1000000g solution

  12. You will prepare 250 ml of a 0.1 M solution of glucose • Calculate the amount of solute that must be contained in the final solution • Add a small amount of solute to the volumetric flask • Add the solute and dissolve if needed • Add more solute to reach the final volume of the solution • Why can’t we just add glucose to 250ml of water?

More Related