NSCI 1321 Lecture 4: Chemical Equations
26 Dec 2016
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Document Summary
Arrhenius proposed the ionic theory of solutions to account for the electrical conductivity of water. Certain substances produce freely moving ions when they dissolve in water, and these ions conduct electric current in an aqueous solution. An electrolyte dissolves in water to give an electrically conducting solution. A nonelectrolyte dissolves in water, producing a poorly conducted solution. Solutions that are poor conductors have less or no ions. Solutions with good conductivity have plenty of ions. A strong electrolyte exists in solution almost entirely as ions. A weak electrolyte dissolves in water, yielding a relatively small percentage of ions. Chemical equations in which the reactants and products are written as if they were molecular substances. In a complete ionic equation, strong electrolytes are written as separate ions in the solution. Ionic equation from which spectator ions have been omitted. A solid ionic substance forms from the mixture of two solutions of ionic substances.
