You have read that a new brand of hair tonic is suppose to contain lead (an ingredient in Grecian Formula). Devise a simple test to confirm the presence or absence of lead in that hair tonic.
Best answer:
Answer by zeimusu
Standard tests for Pb is to dissolve the lead in acid, the test with either potassium iodide or potassium chromate. You should get a bright yellow or orange-yellow (respectively) precipitate. The chromate test is more sensitive, but the iodide test is better if you want to estimate concentrations.
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