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16 Nov 2019
Balance the following redox equations by the ion electron method: (a) H_2 O_2 + Fe^2+ rightarrow Fe^3+ + H_2O (in acidic solution) (b) Cu + HNO_3 rightarrow Cu^2+ + NO + H_2O (in acidic solution) (c) CN^- + MnO^-_4; rightarrow CNO^- + MnO_2 (in basic solution) (d) Br_2 rightarrow BrO^-_3 + Br^- (in basic solution) (e) S_2 O^2-_3 + I_2 rightarrow I^- + S_4 O^2-_6 (in acidic solution) Balance the following redox equations by the ion- clectron method: (a) Mn^2+ + H_2O_2 rightarrow MnO_2 + H_2O (in basic solution) (b) Bi(OH)_3 + SnO^2-_2 rightarrow SnO^2-_3 + Bi (in basic solution) (c) Cr_2 O^2-_7 + C_2O^2-_4 rightarrow Cr^3+ + CO_2 (in acidic solution) ClO^-_3 + Cl^- rightarrow Cl_1 + ClO_2, (in acidic solution) Galvanic Cells and Standard Emfs Review Questions Define the following terms: anode, cathode, cell voltage, electromotive force, standard reduction potential. Describe the basic features of a galvanic cell. Why are the two components of the cell separated from each other? What is the function of a salt bridge? What kind of electrolyte should be used in a salt bridge? What is a cell diagram ? Write the cell diagram for a galvanic cell consisting of an Al electrode placed in a l M Al(NO_3)_3 solution and a Ag electrode placed in a 1 M AgNO_3 solution.
Balance the following redox equations by the ion electron method: (a) H_2 O_2 + Fe^2+ rightarrow Fe^3+ + H_2O (in acidic solution) (b) Cu + HNO_3 rightarrow Cu^2+ + NO + H_2O (in acidic solution) (c) CN^- + MnO^-_4; rightarrow CNO^- + MnO_2 (in basic solution) (d) Br_2 rightarrow BrO^-_3 + Br^- (in basic solution) (e) S_2 O^2-_3 + I_2 rightarrow I^- + S_4 O^2-_6 (in acidic solution) Balance the following redox equations by the ion- clectron method: (a) Mn^2+ + H_2O_2 rightarrow MnO_2 + H_2O (in basic solution) (b) Bi(OH)_3 + SnO^2-_2 rightarrow SnO^2-_3 + Bi (in basic solution) (c) Cr_2 O^2-_7 + C_2O^2-_4 rightarrow Cr^3+ + CO_2 (in acidic solution) ClO^-_3 + Cl^- rightarrow Cl_1 + ClO_2, (in acidic solution) Galvanic Cells and Standard Emfs Review Questions Define the following terms: anode, cathode, cell voltage, electromotive force, standard reduction potential. Describe the basic features of a galvanic cell. Why are the two components of the cell separated from each other? What is the function of a salt bridge? What kind of electrolyte should be used in a salt bridge? What is a cell diagram ? Write the cell diagram for a galvanic cell consisting of an Al electrode placed in a l M Al(NO_3)_3 solution and a Ag electrode placed in a 1 M AgNO_3 solution.
Lelia LubowitzLv2
25 Jun 2019