1 / 23

Ions in solids and solutions.

This text explores the behavior of ions in ionic solids and solutions, including the concept of hydrated ions and the dissolution process. It discusses the bonds being made and broken, as well as the exothermic and endothermic nature of the reactions. The enthalpy changes and solutions are also explained, along with the factors affecting the solubility. Tables 5 and 7 provide additional information.

foreman
Download Presentation

Ions in solids and 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. Ions in solids and solutions. CI 4.5 and revision of 5.1

  2. - - + - + + - - + Ions in ionic solids. Cl- Na+

  3. δ- δ- δ- δ- δ- δ- δ- δ- δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ- δ+ Ions in solution. Hydrated ions - + Most electronegative Polar molecules O Oδ- H Hδ+ Hδ+ H

  4. Dissolving.

  5. δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ- δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ δ+ Some bonds made Some bonds broken - - + - + + - - +

  6. - Some bonds broken Some bonds made - + - + + - - +

  7. + Some bonds made - - + - + Some bonds broken - - +

  8. Some bonds made Dissolving. Some bonds broken Exothermic Endothermic

  9. - - + What is this? ΔHLE - -ΔHLE ΔHhyd(cat) + + ΔHhyd(an) ΔHsol - - +

  10. What is this? ΔHLE - - + -ΔHLE ΔHhyd(cat) - + + - - + ΔHhyd(an) ΔHsol

  11. Exo or endo? - - + -ΔHLE - + + - - +

  12. - What is this? - + - ΔHLE + + - - + -ΔHLE ΔHhyd(cat) ΔHhyd(an) ΔHsol

  13. - Exo or endo? - + - + + - - + ΔHhyd(an)

  14. + - What is this? - + - ΔHLE + - - + -ΔHLE ΔHhyd(cat) ΔHhyd(an) ΔHsol

  15. + - Exo or endo? - + - + - - + ΔHhyd(cat)

  16. enthalpy Gaseous ions ΔHhyd(cat) ΔHhyd(an) -ΔHLE Solution ΔHsolution Solute + solvent ΔHsolution = -ΔHLE + ΔHhyd(cat) + ΔHhyd(an)

  17. enthalpy Gaseous ions ΔHhyd(cat) ΔHhyd(an) -ΔHLE Solution ΔHsolution Solute + solvent Exo or endo? Endo ΔHsolution =

  18. enthalpy Gaseous ions ΔHhyd(cat) ΔHhyd(an) -ΔHLE Solution ΔHsolution Solute + solvent Won’t dissolve Endo ΔHsolution =

  19. enthalpy Gaseous ions ΔHhyd(cat) -ΔHLE ΔHhyd(an) Solute + solvent ΔHsolution Solution Exo or endo? Exo ΔHsolution =

  20. enthalpy Gaseous ions ΔHhyd(cat) -ΔHLE ΔHhyd(an) Solute + solvent ΔHsolution Solution Will dissolve Exo ΔHsolution =

  21. enthalpy Gaseous ions ΔHhyd(cat) ΔHhyd(an) -ΔHLE Solution Solute + solvent ΔHsolution May dissolve Slightly endo

  22. Entropy!

  23. Finally…. (Tables 5 and 7) + 0.078nm 2+ 26

More Related