Solve the following equation for X. Remember to balance the equation?

Balance the following equation by the half-reaction method in an acidic or basic solution as indicated.?

• Balance the following equation by the half-reaction method in an acidic or basic solution as indicated. I - + NO2- --> I2 + NO ( acidic ) You must enter the correct coefficients of the above reactants and products as a single group of integers. Example: C2H5OH(aq) + Cr2O72-(aq) --> CH3CO2H(aq) + Cr3+(aq) the balanced equation is 3C2H5OH(aq) + 2Cr2O72-(aq) + 16H3O+(aq) --> 3CH3CO2H(aq) + 4Cr3+(aq) + 27H2O(l) you would enter 3234 for an answer. NOTE: only enter the coefficients for the species given in the original equation. please help, Im really lost with this one Thanks

• Answer:

  2I- >> I2 +2e- (NO2- +2H + +1e->> NO+ H2O)2 2NO2- +4H+ +2e- >> 2NO+2H2O 2I- + 2NO2- +4H+ >> I2 + 2NO +2H2O