Balance the following redox reaction in basic solution. Which of the following statements is not correct?
Cr3+(aq) + ClO3-(aq) + OH-(aq) ? Cl-(aq) + CrO4^2-(aq)
a) The oxidation state for chromium goes from +3 to +6. The oxidation state for chlorine goes from +5 to 1.
b) The coefficient on Cr3+ is 2.
c) Balancing this reaction requires 5H2O.
d) The oxidation state of chlorine does not change.