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For the following complex ions indicate the charge on the metal

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For the following complex ions indicate the charge on the metal Powered By Docstoc
					Chemistry 106, Chapter 15 Exercises
1. For the following coordination compounds give the formula and charge for the counter ion and the
   complex ion.
   a. [Pd(NH3)3Cl]NO3 b. [Co(NH3)5Cl]CO3 c. Ca[Ni(CN)4] d. Na2[CdCl4]

2. For the following complex ions indicate the charge on the metal ion, ligand formula and charge,
   coordination number, and predicted geometry.
   a. [Ag(NH3)2]+1                      e. [Cr(OH)6]3-                        i. [Zn(C2O4)2]2-
   b. [NiCl4]2-                         f. [Fe(CN)6]3-                        j. [Zn(en)(C2O4)]
                 2+
   c. [Zn(NH3)4]                        g. [Co(en)2(SCN)Cl]+
   d. [Al(H2O)6]3+                      h. [Ni(H2O)2Cl2(OH)2]2-

3. What is the formula of the sodium salt of the ion below? The magnesium salt?
   [Ni(H2O)2Cl2(OH2]2-

4. What is the formula of the sulfide salt of the ion below? The fluoride salt?
   [Co(en)2(SCN)Cl]+

5. Give the formula and charge of each of the following complexes:
   a. Cr3+, two oxalate (C2O4)2- ions, two H2O molecules
   b. Cr3+, five NH3 molecules, one SO42- ion
   c. Cr3+, one ethylenediamine molecule, two ammonia molecules, two I- ions
   d. Pt2+, two ammonia molecules, one oxalate ion
   e. Pt2+, two NH3 molecules, one thiocyante ion (SCN-), one Br- ion
   f. Pt2+, one ethylenediamine molecule, two NO3- ions

6. Predict the formula of the complex formed by
   a. Zn2+ with C2O42-               d. Ag+ with H2O                        g. Fe3+ with C2O42-
   b. Ag+ with CN-                   e. Pd2+ with Br-
        2+         -
   c. Cd with CN                     f. Pt2+ with H2O

7. Give the electronic configuration for the following ions and indicate the number of unpaired electrons
   in each.
   a. V2+    b. Zn2+    c. Cu+    d. Mn4+     e. Ti3+ f. Cr3+     g. Ru4+

8. Identify the Lewis acid and the Lewis base in each of the following reactions.
   a. B(OH)3 + H2O → B(OH)4- + H+
   b. Ag+ + 2NH3 → Ag(NH3)2+
   c. BF3 + F- → BF4-
   d. 6H2O + Fe3+ → Fe(H2O)63+
   e. CN- + H2O → HCN + OH-
   f. HgI2 + 2I- → HgI42-
Answers to Complex Ion Exercises

1. a. NO3-, [Pd(NH3)3Cl]+    b. CO32-, [Co(NH3)5Cl]2+      c. Ca2+, [Ni(CN)4]2-    d. Na+, [CdCl4]2-

2. a. Ag1+, NH3, 2, linear                                   g. Co3+, H2NCH2CH2NH2, SCN1-, Cl-, 6
   b. Ni2+, Cl-, 4, tetrahedral or square planar                 octahedral
   c. Zn2+, NH3, 4, tetrahedral or square planar             h. Ni2+, H2O, Cl1-, OH1-, 6, octahedral
   d. Al3+, H2O, 6, octahedral                               i. Zn2+, (C2O4)2]2-, 4, tetrahedral or square
   e. Cr3+, OH-, 6, octahedral                                   planar
   f. Fe3+, CN-, 6, octahedral                               j. Zn2+, H2NCH2CH2NH2, C2O42-, 4,
                                                                 tetrahedral or square planar

3. Na2[Ni(H2O)2Cl2(OH2]
   Mg[Ni(H2O)2Cl2(OH2]

4. [Co(en)2(SCN)Cl]2S
   [Co(en)2(SCN)Cl]F

5. a. [Cr(C2O4)2(H2O)2]1-                                    d. [Pt(NH3)2(ox)]
   b. [Cr(NH3)5(SO4)]1+                                      e. [Pt(NH3)2(SCN)Br]
   c. [Cr(en)(NH3)2I2]1+                                     f. [Pt(en)(NO3)2]

6. a. [Zn(C2O4)2]2-                                          e. [PdBr4]2-
   b. [Ag(CN)2]1-                                            f. [Pt(H2O)4]2+
   c. [Cd(CN)4]2-                                            g. [Fe(C2O4)3]3-
   d. [Ag(H2O)2]1+

7. a. V2+      1s22s22p63s23p64s03d3
   b. Zn2+     1s22s22p63s23p64s03d10
   c. Cu+      1s22s22p63s23p64s03d10
   d. Mn4+     1s22s22p63s23p64s03d3
   e. Ti3+     1s22s22p63s23p64s03d1
   f. Cr3+     1s22s22p63s23p64s03d3
   g. Ru4+     1s22s22p63s23p64s23d104p65s04d4

8. For the following, the Lewis acid is in italics. The other reactant is the Lewis base.
   a. B(OH)3 + H2O → B(OH)4- + H+
   b. Ag+ + 2NH3 → Ag(NH3)2+
   c. BF3 + F- → BF4-
   d. 6H2O + Fe3+ → Fe(H2O)63+
   e. CN- + H2O → HCN + OH-
   f. HgI2 + 2I- → HgI42-

				
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