Dissolving an ionic salt in water Computer Simulation and Computer Animation

A short computer animation illustration how positive and negative ions in a solid ionic compound dissolve in water might be used to accompany the dissolving salts in water demonstration.
NaCl Dissolves in Water Animation Image341

Dissolving Ionic Salts in Water Demonstration

Several ionic salts (calcium chloride, ammonium nitrate, potassium chloride, magnesiium sulfate, lithium chloride, anhydrous sodium acetae, anhydrous sodium carbonate) are dissolved in water in a calorimeter. A thermomters measures the intitial temperature of the water and the final temperature of the resultant solution. Dissolving ionic salts in water can be used to illustrate formation of Solutions, Enthalpy, Lattice Energy, etc.

Solutions: Like Dissolves Like Solubility and Intermolecular Forces

Water and Hexane are the solvents. Iodine and potassium permanganate are the solutes. Iodine dissolves in hexane. Potassium permanganate dissolves in water.
Like Dissolves Like: Hexane, Water Iodine KMnO4 Image

Conductivity of Electrolytes Demonstration

When a current is applied to an aqeous solution, strong electrolyte solutions light up a light bulb, weak electrolyte solutions dimly light a bulb, and nonelectrolyte solutions do not light a bulb.
Comparing stong, weak, and non-electrolyte solutions: Conductivity


© Copyright 2012 Email: Randy Sullivan, University of Oregon Chemistry Department and UO Libraries Interactive Media Group