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Ch. 8 Chemical Equations and Reactions

Ch. 8 Chemical Equations and Reactions. 8.3 Activity Series. Activity Series. Activity ability of an element to react easier it reacts, higher the activity activity series list of elements organized according to activities from highest to lowest. Activity Series. metals

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Ch. 8 Chemical Equations and Reactions

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  1. Ch. 8 Chemical Equations and Reactions 8.3 Activity Series

  2. Activity Series • Activity • ability of an element to react • easier it reacts, higher the activity • activity series • list of elements organized according to activities • from highest to lowest

  3. Activity Series • metals • greater activity, easier to lose electrons • easier to become a cation • nonmetals • greater activity, easier to gain electrons • easier to become an anion

  4. Metal-Metal Ion Reactivity Lithium Potassium Calcium Sodium Magnesium Aluminum Manganese Zinc Chromium Iron Lead Copper Mercury Silver Platinum Gold Li+ K+ Ca2+ Na+ Mg2+ Al3+ Mn2+ Zn2+ Cr2+, Cr3+ Fe2+, Fe3+ Pb2+ Cu2+ Hg2+ Ag+ Pt2+ Au+, Au3+ Most reactive Least reactive

  5. Activity Series • used to predict whether single replacement reactions will occur • most active is on top • an element can replace anything below it but not any above it

  6. Practice • zinc and hydrofluoric acid • Zn(s) + HCl(aq)  ZnCl2 + H2 • calcium and lead (II) nitrate • Ca + Pb(NO3)2 Ca(NO3)2+ Pb • copper and lithium sulfate • Cu + Li2SO4 no reaction • bromine and iron (II) chloride • Br2 + FeCl2 no reaction

  7. Practice • Rb(s) + NaOH(aq)  • Zn(s) + NaCl(aq)  • Mg(s) + 2HCl(aq)  • Fe(s) + MgCl2(g)  • Pt(s) + H2O(l)  • Al(s) + CaSO3(g)

  8. Practice • Rb(s) + NaOH(aq)  Na + RbOH • Zn(s) + NaCl(aq)  No reaction • Mg(s) + 2HCl(aq)  H2 + MgCl2 • Fe(s) + MgCl2(g)  No reaction • Pt(s) + H2O(l)  No reaction • Al(s) + CaSO3(g) No reaction

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