Iodate(V) ions oxidize iodide ions in acidic solution to form iodine and water according to the equation:
IO3
1-
(aq) + 5I1-
(aq) + 6H1+
(aq)  3 I2(aq) + 3 H2O(l)
If the number of moles of each reactant consumed after one minute was measured, which would have been
consumed least? (Explain why).
a) IO31-
b) H1+
c) I1-
d) They would all have been
consumed to the same extent.

Question

Iodate(V) ions oxidize iodide ions in acidic solution to form iodine and water according to the equation:
IO3
1-
(aq) + 5I1-
(aq) + 6H1+
(aq)  3 I2(aq) + 3 H2O(l)
If the number of moles of each reactant consumed after one minute was measured, which would have been
consumed least? (Explain why).
a) IO31- 
b) H1+
c) I1- 
d) They would all have been
consumed to the same extent.