Question

Complete the following Mn2+(aq) + F2(g) --> F-(aq) + MnO4-(aq) a. Balance the redox equation above...

Complete the following

Mn2+(aq) + F2(g) --> F-(aq) + MnO4-(aq)

a. Balance the redox equation above in acidic solution. Show work for full credit.

b. Circle the reducing agent in this redox reaction.

c. Calculate Eo for this reaction

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Homework Answers

Answer #1

a) balanced reaction :

2 Mn+2 + 5 F2 + 8H2O ------------------> 2 MnO4- + 10 Br- + 16 H+

oxidation half reaction:

Mn+2 -----------------> MnO4-

full balnaced in acidic medium :

Mn+2 + 4H2O -----------------> MnO4-

electron balced :

Mn+2 + 4H2O -----------------> MnO4- + 5e- (1)

reduction half reaction:

F2 + 2e- --------------------> 2 F- (2)

multiply 1 with 2 and 2 with 5 we get full equation.

b) reducing agent : Mn+2

oxidising agent F2

c)

Eocell = 2.87 -1.507

Eocell = 1.363 V

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