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pre lab page 2 7 7. Complete and balance each of the fol lowing formula unit or

ID: 898246 • Letter: P

Question

pre lab page 2 7


7. Complete and balance each of the fol lowing formula unit or net ionic equations. Write NR if no reaction occurs. Include the states (s, (, g, or aq) of all products a. Mg(s) + Al(NO3)3(aq) b. Ags) + FeCl3(aq) Chegg Copyright CENGAGE Learnin Experiments in General Chemis Edition: 2 sarahjazzeyd@yahoo.co Printed from www.chegg.conm opyright 2010 Cengage Learning, Inc. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part 6/ che g.com/reader/print.php?id-58e1b04b4156a897c7c65e73 ba&ame-Experiments;%20i0%20General%20Chemistry&rang.;

Explanation / Answer

7.

3Mg (s)+ 2Al(NO3)3 (aq)= 3Mg(NO3)2 (aq)+ 2Al (s)

            3Mg (s)+ 2Al3+ (aq)= 3Mg2+ (aq)+ 2Al (s) net ionic,

            Ag + FeCl3 = NR

     

    7c. NR

   7d.

Ba2+ (aq) + SO42- (aq) = BaSO4 (pp)   net ionic

    7 e.

NH3 (aq) + H+ (aq) = NH4+ (aq)

NH3 + HClO4 = NH4ClO4   all are (aq)

     7f. NR

       7g.

Pb2+ (aq) + SO42- (aq)   = PbSO4 (s)

You have to write also complete (formula) reactions.

8.

Zn2+ (aq) + 2HO- (aq) = Zn(OH)2 (s)   net ionic

write also complete (formula) reaction

9.

Co(NO3)2 (aq) + 2NH3 (aq)+ 2H2O (l)= Co (OH)2 (s) + 2NH4NO3 (aq)

Co (OH)2 (s) +6 NH3 (aq)   = [Co(NH3)6]2+ (aq) + 2HO- (aq)