Double replacement reactions with net ionic and spectators

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  • 1. Chapter 8 Chemical Equations !Word Equation – the names of the substances are given inwords for you to interpret.Zinc plus Hydrochloric Acid yields Zinc chloride plus Hydrogen gas ! REACTANTS PRODUCTS
  • 2. Interpreting chemical equations Al (OH)3 + 3HCl AlCl3 + 3 H2O Reacts To make And threeOne with 3 one FU of moleculesformula molecules aluminum of waterunit of of HCl chloridealuminumhydroxideSO WHAT DOES THIS MEAN????
  • 3. Ions in water solutionWhen ionic substances dissolve in water their crystal latticestructure breaks up and they exist as IONS in water !NaCl yields Na + plus Cl -KCl yields K+ plus Cl-
  • 4. Ionic equations and spectators !• Ionic equations simply show what is happening to the ions taking part in a reaction.• Spectator ions are those which do not actually participate in the reaction.• See solubility chart page 860
  • 5. Write the NET ionic equation which occurs when aqueous solutions of zinc chloride and potassium hydroxide react. ZnCl2 (aq) + 2 KOH (aq) Zn (OH)2(s) + 2 KCl(aq)Zn+2 + 2Cl-1 + 2K+ + 2OH- Zn(OH)2(s) + 2K+ + 2Cl- Zn+2 + 2OH- Zn(OH)2(s)
  • 6. Predict the productsWhen K reacts with MgF 2 Mg + KF When Mg reacts with KF NO REACTION
  • 7. Predict the productsNaOH + KClNaNO3+ KBrAmmonium Carbonate + Magnesium carbonate as precipitate andMagnesium Chloride ammonium ions and chloride ions as spectators