The iodine "clock reaction" involves the following sequence of reactions occurring in a reaction mixture in a single beaker. 1. io3(aq) + 5i–(aq) + 6h+(aq) → 3i2(aq) + 3h2o(l) 2. i2(aq) + 2s2o32–(aq) → 2i–(aq) + s4o62–(aq) the molecular iodine (i2) formed in reaction 1 is immediately used up in reaction 2, so that no iodine accumulates. in one experiment, a student made up a reaction mixture which initially contained 0.0020 mol of iodate ions (io3–). if the iodate ions reacted completely, how many moles of thiosulfate ions (s2o32–) were needed in reaction 2, in order to react completely with the iodine (i2) produced in reaction 1? multiple choice 0.0020 mol 0.012 mol 0.0040 mol