A method used by the U.S. Environmental Protection Agency
(EPA) for determining the concentration of ozone in air is to pass
the air sample through a “bubbler” containing sodium iodide,
which removes the ozone according to the following equation:
O31g2 + 2 NaI1aq2 + H2O1l2¡
O21g2 + I21s2 + 2 NaOH1aq2
(a) How many moles of sodium iodide are needed to remove
5.95 * 10-6 mol of O3?
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