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

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

1 Answer
Jan 21, 2018

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#