NETINEQ(PrecipationReactions)

NETINEQ(PrecipationReactions) - METHODS FOR WRITING...

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IONIC EQUATIONS AND NET IONIC EQUATIONS Notes: 1. The following terms and definitions are useful: Solute: a solid or gas that is dissolved in a solvent. Solvent: a liquid that the solute is dissolved in. Solution: a combination of solute and solvent. Saturated solution: a solution that cannot have more solute dissolved in it at a given temperature. Unsaturated solution: A solution that can have more solute dissolved in it. Soluble: dissolves in a particular solvent. 2. In writing molecular, full ionic and net ionic equations we must include the states with each reactant and product. The states are indicated as abbreviations that are placed as subscripts after each reactant and product. The states and their abbreviations are as follows: gas (g) liquid (l) solid (g) aqueous (aq) The term aqueous is used when the solvent is water. 3. If a compound is water insoluble this means that the compound does not dissolve in water and remains as a solid which is indicated as a subscript (s) after the compound. If a compound is soluble in water, this is indicated by the use of the subscript (aq) after the compound. 4. In molecular equations, water soluble acids, bases and ionic compounds are not broken up into ions. In molecular equations gases, liquids and solids are not broken up into ions. 5. In full ionic equations, strong acids, strong bases and ionic compounds that are soluble in water are broken up into anions and cations. In full ionic equations weak acids that are not ionic compounds, weak bases, gases, liquids and solids are not broken up into ions. 6. In net ionic equations, strong acids, strong bases and ionic compounds that are soluble in water are broken up into anions and cations. In net ionic equations weak acids that are not ionic compounds, weak bases, gases, liquids and solids are not broken up into ions. 7. The net ionic equation is derived from the full ionic equation by identifying and eliminating spectator ions. 8. A species is a spectator if the following three items remain exactly the same when a species is a reactant and a product: formula, charge and state. Example 1: Write a balanced net ionic equation for the reaction between an aqueous solution of potassium nitrate Ca(NO 3 ) 2(aq) and an aqueous solution of potassium sulfate K 2 SO 4(aq) . 1
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This note was uploaded on 03/31/2011 for the course CHEMISTRY 1023 taught by Professor Bloxton during the Spring '11 term at Temple.

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NETINEQ(PrecipationReactions) - METHODS FOR WRITING...

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