write the overall balance chemical equation b. what is the cell potential if one half-cell is created with 1.02m potassium dichromate and 0.40m chromium (iii) nitrate hexahydrate in 0.500m nitric acid and the other half cell is made up with 0.060m iron(iii) chloride hexahydrate and 0.10m iron (ii)chloride tetrahydrate? c. what is the cell potential if the chromium half-cell were operated at a ph of 8.00 instead of using the 0.500m nitric acid?