1 / 8

Solutions

Solutions. Homogeneous Solutions. Vocabulary. Aqueous solution: water that contains dissolved substances Solute: substance being dissolved Solvent : dissolving agent-usually present in larger amount Solution: homogeneous mixture. The Solution Process.

mahala
Télécharger la présentation

Solutions

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 Homogeneous Solutions

  2. Vocabulary • Aqueoussolution:water that contains dissolved substances • Solute:substance being dissolved • Solvent: dissolving agent-usually present in larger amount • Solution:homogeneous mixture

  3. The Solution Process 1. Solvation: The process by which the solute ions break away from the crystal and become surrounded by solvent molecules as the ionic crystal dissolves.   Ionic Solid NaCl(s)  Na+(aq) + Cl-(aq) CuCl2(s)  Cu2+(aq) + 2 Cl-(aq) CaSO4(s)  Ca2+ (aq) + SO42- (aq) BaBr2(s)  Ba2+ (aq) + 2Br- (aq) K2SO4(s) 2K+ (aq) + SO42-(aq) http://www.elmhurst.edu/~chm/vchembook/171solublesalts.html

  4. Electrolyte: A substance that conducts in an aqueous solution Non-electrolyte: A substance that does not conduct Strong electrolyte: a substance that conducts well Weak electrolyte: a substance that conducts poorly

  5. Solubility Curves Vocabulary: • Saturated: solvent is holding the maximum amount of solute = equilibrium • Unsaturated: solvent is holding less than the maximum amount of solute • Supersaturated: solvent contains more solute that it should = unstable • Solubility: grams of solute per 100g solvent that will dissolve in solvent • Soluble: solute readily dissolves • Insoluble: solute does not dissolve appreciably • Solubility Curve: graph of solubility versus temperature • Miscible: capable of dissolving to form a homogeneous solution • Immiscible: incapable of dissolving • http://www.elmhurst.edu/~chm/vchembook/106Amixture.html

  6. Solubility Relationships 1. Solubility of an ionic solid http://www.ucl.ac.uk/news/ucl views/0803/salt500

  7. 2. Solubility of a gas

  8. Demonstration: Supersaturated Solution 1. What was added to the test tube? Sodium Thiosulfate Na2S2O3.5H2O 2. How was the solubility of the solution increased? by heating the solution 3. What happened when a crystal was added to the saturated solution after cooling? What type of solution was created? • The solution could not hold that much dissolved solid and it precipitated out • Supersaturated Solution

More Related