You will perform two alkene tests to determine whether or not you have the alkene product instead of the alkane starting material or some other non-alkene impurity. Alkenes decolorizethe iodine and potassium permanganate solutions you will be using. A positive test for the presence of an alkene in the iodine solution will be indicated if the initial purple color becomes clear or light pink. A positive test for the presence of an alkene in the potassium permanganate solution will be indicated if the initial purple color disappear and a dark brownsuspension (manganese dioxide) forms in a clear to light brown solution
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