CHEM-002 Chapter Notes - Chapter 13: Intermolecular Force, Miscibility, Partial Pressure
2 Feb 2017
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Solute-solute interaction: must overcome solute-solute bond to disperse solute in solvent. Solvent-solvent interaction: overcome to make room for solute particles. In non dipole attractions: solvent-solute interaction pulls or overcomes solute- solute interaction and solvent-solvent interaction: hsoln= hsolute + hsolvent + hmix, like dissolves like (polar dissolves polar and non-polar dissolves non-polar) Physical is different from chemical process: in a state change , there is no chemical reaction (the reagent is recoverable/ the solute is recoverable) If undissolved solute is present in equilibrium, the solution is saturated. Maximum amount of solute that can be dissolved in a given amount of solvent: solubility. Unsaturated: solution that can dissolve more solute. Supersaturated: when more solute is added under different temperature conditions, such that the solution was once saturated before the temperature was changed, so everything remains dissolved and crystallization only occurs at the new, changed temperature. The solubility of gases in water increases as attraction between solute (gas) and solvent (water) increases.
