converts to in the first reaction. The coefficient in front of is three times the coefficient in front of . In other words, each mole of will produce three moles of . 0.0020 moles of will convert to 0.0060 moles of .
How many moles of thiosulfate ions are required?
reacts with in the second reaction. The coefficient in front of is twice the coefficient in front of . How many moles of does each mole of consume? Two. 0.0060 moles of will be produced. As a result, moles of will be needed.