What are the coefficients of the reactants and products in the balanced equation

Question

What are the coefficients of the reactants and products in the balanced equation above? Remember to include H_2 O(l) and H^+ (aq) in the appropriate blanks. Your answer should have six terms. Enter the equation coefficients in order separated by commas (e.g., 2, 2, 1, 4, 4, 3). Include coefficients of 1, as required, for grading purposes. The balanced equation thus reads BrO_3^- (aq) + 3Sn^2+ (aq) + 6H^+ (aq) rightarrow Br^- (aq) + 3Sn^4+ (aq) + 3H_2O(l) Notice that coefficients of 1 are excluded from the final balanced equation. Potassium permanganate, KMnO_4 is a powerful oxidizing agent. The products of a given redox reaction with the permanganate ion depend on the reaction conditions used. In basic solution, the following equation represents the reaction of this ion with a solution containing sodium fluoride: Mn O_4^- (aq) + F^- (aq) rightarrow Mn O_2(s) + F_2(aq) Since this reaction takes place in basic solution. H_2 O(1) and OH^- (aq) will be shown in the reaction. Places for these species are indicated by the blanks in the following restatement of the equation: Mn O_4^- (aq) + F^- (aq) + __ rightarrow Mn O_2 9s) + F_2 (aq) +__ what are the coefficients of the reactants and products in the balanced equation above? Remember to include H_2 O(1) and OH^- (aq) in the blanks where appropriate. Your answer should have six terms. Enter the equation coefficients in order separated by commas (e.g., 2, 2, 1, 4, 4, 3)-Include coefficients of 1, as required, for grading purposes.

Explanation / Answer

Balance in basic:

MnO4- = MnO2

F- = F2

balance F

MnO4- = MnO2

2F- = F2

balance Ha nd OH adding water

4H+ + MnO4- = MnO2 + 2H2O

2F- = F2

balance charges

3e- + 4H+ + MnO4- = MnO2 + 2H2O

2F- = F2 + 2e-

balance e-

6e- + 8H+ + 2MnO4- = 2MnO2 + 4H2O

6F- = 3F2 + 6e-

add all

6F- + 6e- + 8H+ + 2MnO4- = 2MnO2 + 4H2O + 3F2 + 6e-

cancel common terms

6F- + 8H+ + 2MnO4- = 2MnO2 + 4H2O + 3F2

add OH-

8OH- + 6F- + 8H+ + 2MnO4- = 2MnO2 + 4H2O + 3F2 + 8OH-

6F- + 8H2O + 2MnO4- = 2MnO2 + 4H2O + 3F2 + 8OH-

6F- + 4H2O + 2MnO4- = 2MnO2 + 3F2 + 8OH-

coefficients

6,4,2,2,3,8

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