In a particular redox reaction, MnO2 is oxidized to MnO4– and Ag is reduced to Ag. Complete and balance the equation for this reaction in acidic solution. Phases are optional.

You didn't put a + charge on one of the Ag. It has to be on the left side

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

Ag^+ + e ==> Ag^+
Those are the two BALANCED half reactions. Multiply equation 1 by 1 and equation 2 by 3 and add them.

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pstnonsonjoku pstnonsonjoku · Answer 2 · 2020-03-02T04:37:22+01:00

pstnonsonjoku pstnonsonjoku

02-03-2020

Answer:

2H2O + MnO2 + 3Ag^+-------------> MnO4^- + 4H^+ + 3Ag

Explanation:

Oxidation half equation:

2H2O + MnO2 -------------> MnO4^- + 3e + 4H^+

Reduction half equation:

3Ag^+ + 3e -------------> 3Ag

Overall redox reaction equation:

2H2O + MnO2 + 3Ag^+-------------> MnO4^- + 4H^+ + 3Ag

The hydrogen ions comes from water.

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