Chemistry Exam 2 Study Guide

Chemistry Exam 2 Study Guide - Chemistry Exam 2 Study Guide...

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Chemistry Exam 2 Study Guide Chapter 4 Solution- homogeneous mixture of 2 or more substances Solute- substances present in smaller amount(s) Solvent – substances present in the larger amount Electrolyte Substance that when dissolved in water results in a solution that can conduct electricity o Can be weak or strong o Opposite is a nonelectrolyte Strong electrolyte is 100% dissociated ex: NaCl(s) Na + (aq) + Cl - (aq) Weak electrolyte – not completely dissociated ex: CH 3 COOH(aq)  CH 3 COO - (aq) + H + (aq) *double arrow indicates it doesn’t go completely to the right, the reactions occur in both directions Hydration The process in which an ion is surrounded by water molecules arranged in a specific matter Another name = solvation More water = more energy Precipitation Reactions Precipitate- insoluble solid that separates from solution Pb(NO 3 ) 2 (aq) + 2NaI(aq) PbI 2 (s) + 2NaNO 3 (aq) Total ionic: Pb 2+ + 2NO 3 - + 2Na + + 2I - PbI 2 (s) + 2Na + + 2NO 3 - Ions that are not in net ionic are spectator ions Net ionic: Pb 2+ + 2I - PbI
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Chemistry Exam 2 Study Guide - Chemistry Exam 2 Study Guide...

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