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What is the type of test used to show color changes of certain water solutions?
Wiki User
∙ 12y ago
adding what is called an indicator
such as phenolphthalein which is colorless in an acidic solution, but turns pink in an acid solution
often used in a test called titration
Wiki User
∙ 12y ago
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The purpose of adding hexane to the aqueous solutions of halogens?
to indicate the changes of colour and to determine whether displacement of halogen occur
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red
