Chapter_13-Solutions

Chapter_13-Solutions - Solutions Ch.13.Solutions Solutions...

Info iconThis preview shows pages 1–13. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Solutions Ch.13.Solutions Solutions = homogeneous mixtures Ch.13. Solutions The table indicates states of a solute before it is been dissolved. In fact, a gas, for example, after been dissolved is not a gas anymore. Solvation = solvent molecules surround the solute molecules Ch.13. Solutions Stage 1. Initial state. Stage 2. The process Stage 3. The solution is formed Energetically the overall process of dissolving is: 1) Breaking solute-solute bonds 2) Breaking solvent-solvent bonds 3) Making solute-solvent bonds Energetics of the dissolving Ch.13. Solutions Energetics of the dissolving Ch.13. Solutions ∆ H solution = ∆ H solute-solute + ∆ H solvent-solvent + ∆ H solute+solvent “New space” requirement Ch.13. Solutions “New space” requirement Ch.13. Solutions “New space” requirement Ch.13. Solutions “New space” requirement Ch.13. Solutions The larger is a solute particle the more solvent-solvent forces it has to overcome for making it inside. Spontaneous processes Ch.13. Solutions 1. Processes in which the energy of the system decreases tend to occur spontaneously. 2. Processes at constant temperature in which the randomness or dispersal in space of the system increases tend to occur spontaneously. Entropy: the measure of the randomness Ch.13. Solutions Randomness is understood as the number of possible states (with equivalent energy) that system can have. Low entropy (few possible arrangements) High entropy (more possible arangements) Spontaneous endothermic reactions can happen if the randomness factor prevail over energetic factor. Two forces compete for the destiny of a system: 1)The order (controlled by intermolecular forces); 2)The chaos (controlled by the number of possible arrangements). Saturated solutions Ch.13. Solutions dissolve Solute+solvent ↔ solution crystallize At a certain concentration a dynamic equilibrium between solid and dissolved solute is established. The concentration achieved in these conditions is called solubility ....
View Full Document

This note was uploaded on 01/02/2012 for the course CHEM 114 taught by Professor Sergeiaksyonov during the Fall '11 term at ASU.

Page1 / 30

Chapter_13-Solutions - Solutions Ch.13.Solutions Solutions...

This preview shows document pages 1 - 13. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online