پاورپوینت واکنشهای شيميايي در محلولهای آبی

پاورپوینت واکنشهای شيميايي در محلولهای آبی

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پاورپوینت واکنشهای شيميايي در محلولهای آبی (pptx) 73 اسلاید

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واکنشهای شيميايي در محلولهای آبیChemical ReactionsThe following table summarizes the common Driving forces that tend to make reactions go in the direction of the arrow:Reactants  ProductsWhen two or more chemicals are brought together if any of the above can occur a chemical reaction is likely to take place! Formation of a solidFormation of waterFormation of gasTransfer of electronsCHEMISTRY - science of properties and transformations of matterCHEMICAL REACTIONS - central to CHEMSITRYCLASSIFICATION of REACTIONSPrecipitationOxidation-reductionAcid-baseGas formingPrecipitation ReactionsSolubility RulesThere are simple guidelines that allow one to predict whether or not a reaction will produce an insoluble compound: these are called the Solubility RulesIonic Equations:Net IonicThe ions that appear on both sides of the equation in identical forms. These ions are not involved directly in the reaction and are called spectator ions.In the net ionic equation the spectator ions are omitted leaving only the ions directly involved in the reaction.Pb2+(aq) + 2NO3-(aq) + 2K+(aq) + 2I-(aq)  PbI2 (s) + 2K+(aq) + 2NO3-(aq)spectator ionsPb2+(aq) + 2I-(aq)  PbI2 (s)Ionic Equations:SummarySummary of the 3 different chemical equations:Molecular equationComplete ionic equationNet ionic equationPb(NO3)2(aq) + 2KI(aq)  PbI2 (s) +2KNO3(aq)Pb2+(aq) + 2NO3-(aq) + 2K+(aq) + 2I-(aq)  PbI2 (s) + 2K+(aq) + 2NO3-(aq)Pb2+(aq) + 2I-(aq)  PbI2 (s)Acid-Base Reactions:NeutralizationConsider the reaction between Mg(OH)2 [milk of magnesia] and HCl (stomach acid)The net reaction is:The acid has been neutralized