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August 22, 2014

Homework Help: Science : Chemistry

Posted by Maame on Saturday, December 10, 2011 at 4:10pm.

The concentration of dissolved chlorine in tap water can be determined by adding excess potassium iodide and then using aqueous sodium thiosulphate to precipitate the resulting iodide ions. In Ontario, the aesthetic objective for chlorine in tap water is a maximum concentration of 250 mg/L. Find the minimum volume of a 0.00100 mol/L solution of potassium iodide that should be used to test a 500mL sample of water.

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