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AP Chemistry/Unit 4: Chemical Reactions
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Redox Reaction Stoichiometry

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The half-reaction for the reduction of the permanganate ion, MnO4−MnO_4^-, in an acidic solution is shown below. MnO4−+8H++5e−→Mn2++4H2OMnO_4^- + 8H^+ + 5e^- \rightarrow Mn^{2+} + 4H_2O If 0.1 moles of electrons are consumed in the reaction, how many moles of KMnO4KMnO_4 are reduced?

A

0.5 moles

B

0.02 moles

C

0.05 moles

D

0.10 moles

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