CHM 103 Lecture Notes - Lecture 16: Systematic Chaos, Kinetic Theory Of Gases, Thermal Expansion
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Occur between dissolved materials - written as molecular equations, total ionic equations, and net ionic equations. Molecular equations- each compound is represented by its formula. Total ionic equations- all soluble ionic substances are represented by ions they form in solution. Net ionic equations- only unionized or insoluble materials/ions that undergo changes as the reaction proceeds are represented. Spectator ions- any ions that appear on both the left and right sides. Nacl (aq) = na+ (aq) + cl- (aq) Balanced: nacl (aq) + agno3 (aq) agcl (s) + nano3 (aq) Total ionic: na+ (aq) + cl- (aq) + ag (aq) + no3- (aq) agcl (s) + na+ (aq) + no3- (aq) Net ionic (spectators removed): cl- (aq) + ag+ (aq) agcl (s) All chemical reactions are accompanied by changes in energy. Exothermic- chemical reactions that release heat as a product, ex.
