A water treatment tablet contains 20.0 mg of tetraglycine hydroperiodide, 40.0% of which is available as soluble iodine. If two tablets are used to treat 1.00 liter of drinking water, what is the concentration in ppm of iodine in the treated water

Explanation:

Mass of one tablet = 20 mg

Mass of two tablets =

Percent that is soluble in water = 40%

Mass of tablet that is soluble in water =

So, mass of solute is

Density of water = 1 kg/L

Volume of water = 1 L

So, mass of 1 L of water is

PPM is given by

Hence, the concentration of iodine in the treated water .

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