CAS BI 105 Study Guide - Midterm Guide: Supersaturation, Semipermeable Membrane, Osmotic Pressure
5 Dec 2016
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Document Summary
As the polar water molecules begin to surround ions, they break the attraction between the ions (interionic) and the attractive force between water molecules and ions are stronger. The crystal is picked apart ion by ion. Random motion of solute ions in solution causes them to collide with one another and some return to the solid of the solute. Equilibrium will be reached when the the ions leave the undissolved at the same rate that the ions go back to the undissolved solute. Supersaturated solutions form when there are no sites with which the excess solute particles can collide. A seed or crystal of solute causes the saturated state to enter the supersaturated stage and crystallize. Like dissolves like sometimes the water is more attracted to each other and sometimes the solute is too strong in bonds. Solution concentrations- relationship between the amount of solute and the amount of solution that it contains.
