|MadSci Network: Chemistry|
hi Megha .. sorry as i am replying very late .. but there is a method of finding flourine value in the toothpaste ... Take specific quantity of any specific tooth paste, dissolve it in water and to it add any salt containing cation in its aqueous solution that will form a precipitates with flourine. e.g Silver ion in excess. The moles of Silver flouride liberated can be calculated by using the oxidizing agent to liberate flourine gas from the flouride ion. The quantity of flourine gas can be calculated and measured and then be used to calculate the moles of flouride ion in the Silver flouride form. This will in turn gives the quantity of flourine ions present in the sample of tooth paste. I know its a kind of difficult practical to be performed at home but you know this is the only way of flourine I come to know ... anewayz for better results u better concern some dental laboratories. Best of Luck with your Project.
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