Saturated Solutions Annotated Lecture Slides

Views:
 
Category: Education
     
 

Presentation Description

No description available.

Comments

Presentation Transcript

Learning goals:

Learning goals Compare and describe saturated and unsaturated solutions at the particle-level, and in terms of macroscopic observations.  Explain how and whether changes in solute amount and changes in volume affect the concentration of unsaturated and saturated solutions. Relate the maximum concentration of saturated solutions (at a particular temperature) to the identity of the solute.

Slide2:

Solubility is the amount of solute required to form a saturated solution. A solution with a concentration of dissolved solute that is less than the solubility is said to be unsaturated. A solution with a concentration of dissolved solute that has reached its “maximum” value is saturated. A solution is said to be supersaturated if more solute is dissolved than in a saturated solution. This is an unstable condition.

Slide3:

Sketch what happens when AgBr (s) is added to water. Describe the salt Before it is added to water. When it is first added. When a lot is added. Use the terms unsaturated, saturated, and supersaturated (as applicable) to in your description. Using the PhET Simulation: https://phet.colorado.edu/en/simulation/concentration

Slide4:

Unsaturated or saturated? Unsaturated or saturated? Will Ag + ions combine with Br - ions in this saturated solution? Yes, some AgBr (s) will form. Yes, more and more AgBr (s) will form until all the ions are used up. No, AgBr (s) will not form since the solution is saturated.

Slide5:

Use the terms unsaturated, saturated, and supersaturated (as applicable) to describe solutions I, II, and III. I II III Which solution has the highest concentration?

Slide6:

Use the terms unsaturated, saturated, and supersaturated (as applicable) to describe solutions I, II, and III. I II III Which solution has the highest concentration? “Unsaturated” – notice only Silver and Bromide ions are in the solution and no “Bound” Silver bromide compound is present. “Saturated” – notice solution volume is same but more Silver and Bromide ions are in the solution and now “Bound” Silver bromide compound is present. “Unsaturated” – by adding more solvent to increase the volume only Silver and Bromide ions are in the solution and no “Bound” Silver bromide compound are present. Without knowing the volume of the solution you can’t be sure for all of them; but since the volumes of I and II appear to be the same and II has more dissolved particles than I; it (II) would be the more concentrated than solution I.

Annotated Lecture Slides for Saturated Solutions Lecture Demo:

Annotated Lecture Slides for Saturated Solutions Lecture Demo SIMULATIONS USED Salts and Solubility, Concentration, Molarity AUTHORS Ted Clark (The Ohio State University) Julia Chamberlain (University of Colorado Boulder) COURSE General Chemistry COPYRIGHT: This work is licensed under a Creative Commons Attribution 4.0 International License .

authorStream Live Help