6. Chemical Quantities & Aqueous Reactions

Which of the following is the correctly balanced equation for the redox reaction of MnO_4^- + Cl^- → MnO_2 + Cl_2 in basic solution?

Balance the following redox reaction in basic solution: MnO4- (aq) + Br- (aq) → BrO3- (aq) + MnO2 (s). What is the coefficient in front of H2O in the balanced reaction?