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activity series by tomsgreathits

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									                                                         We have looked at several reactions:                       K
                                                            Fe + CuSO4 → Cu + Fe2(SO4)3                             Na
                                                                                                                    Li
     The Activity Series                                    Li + H2O → LiOH + H2
                                                         Such experiments reveal trends. The activity
                                                                                                                    Ca
                                                                                                                    Mg
                                                         series ranks the relative reactivity of metals.            Al
                                                         It allows us to predict if certain chemicals will          Zn
                                                         undergo single displacement reactions when                 Fe
                                                         mixed: metals near the top are most reactive               Ni
                                                         and will displacing metals near the bottom.                Sn
                                                                                                                    Pb
                                                         Q: Which of these will react?                              H
                                                            Fe + CuSO4 →                                            Cu
       Text Reference: 3.3 (pg. 125 - 128)                  Ni + NaCl       →                                       Hg
                                                            Li + ZnCO3 →                                            Ag
                                                            Al + CuCl2 →                                            Au

H is the only nonmetal listed. H2 may             K                             Other Activity Series Information
be displaced from acids or can be     cold        Na
                                                  Li      • All metals will have a specific place in the
given off when a metal reacts with    H2O
H2O (producing H2 + metal hydroxide).             Ca        activity series. For simplicity, only the most
The reaction with H2O depends on hot H O          Mg        common metals are shown.
metal reactivity & water temp.          2         Al      • The metals near the top of the activity series
Q: will Mg react with H2O?                        Zn        are more reactive because their valence
                                       steam      Fe
A:                                                          electrons are more easily removed.
   Mg + H2O →                                     Ni      • On tests and exams the activity series may
                                         acid     Sn
Q: Zn + HCl →                                     Pb        appear as K, Na, … Ag, Au; you must
Complete these reactions:                         H         remember that K is reactive, Au is not.
   Al + H2O(steam) →                              Cu      • If the valence of a metal is not indicated in
   Cu + H2O →                                     Hg        the question, use its most common valence
   Ca + H2SO4 →                                   Ag        (in bold on your periodic table) to determine
   Na + H2O →                                     Au        the correct chemical formula.

             Activity series lab                                                    Mg          Cu           Zn
1. On the next slide, place a check in the corner of                            Mg + AgNO3
                                                         AgNO3




   boxes where you think reactions will take place.                                  →
2. Get a plastic spot plate and a glass rod.                                    Ag+ Mg(NO3)2
3. Combine chemicals specified in the chart.
                                                         H2SO4 Fe(NO3)3 CuCl2




   Figure out a way to keep track of the chemicals.
   Use a ¼ scoop for solids (the less, the better).
   Use 1 squeeze of an eyedropper for solutions.
4. Write chemical equations for chemicals that
   reacted. Write NR where there was no reaction.
5. Dump used chemicals into the large funnel at
   the front of the room (use a squirt bottle to rinse
   remaining chemicals into the funnel). Wash the
   spot plate and glass rod very well. Dry & return.

                  Oxides                          K
The formation                                     Na
                      Oxides form via the         Li
and behavior of        addition of oxygen:        Ca
oxides can also          K + O2 → K2O             Mg
be predicted via                                  Al
the activity series. Oxides plus H2 (with         Zn
Complete these        heat) will change to        Fe
                        metal and H2O:            Ni
reactions:                                        Sn
                              heat
 Ca + O2 →           NiO + H2 → Ni + H2O          Pb
                                                  H
 Au + O2 →           Oxides decompose             Cu
                         with heat:               Hg
 Fe2O3+ H2 ⎯→
           heat
                            heat                  Ag
                      HgO ⎯→ Hg + O2              Au

								
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