Problem #7 - Redox in Basic Solution, Overall Result

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

Balance the following redox equation in basic solution
HO2- + Cr(OH)3 → CrO42- + OH-

OH- + HO2- + Cr(OH)3CrO42- + H2O