Balancing Redox Reactions. Balance the acidic solution of MnO2+ Cl- = Mn+2 + Cl2 using half reaction?

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Just making sure that my answer is right because my teacher(disorganized) doesn't have an answer key.

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Answer 1 · 2018-01-21T17:14:56

Disorganized professors for chemistry aren't fun!

Consider,

$MnO_2 + Cl^(-) to Mn^(2+) +Cl_2$ composed of,

$MnO_2 to Mn^(2+)$ , and

$Cl^(-) to Cl_2$

In turn,

$"Reduction: "$ $2e^(-) + 4H^(+)+ MnO_2 to Mn^(2+) + 2H_2O$ , and

$"Oxidation:"$ $2Cl^(-) to Cl_2 + 2e^(-)$

sum to give us,

$4H^(+) + MnO_2 + 2Cl^(-) to Cl_2 + Mn^(2+)+2H_2O$