sheanhung Posted February 13, 2006 Share Posted February 13, 2006 From my knowlegde: t-butyl alcohol is a tertiary alcohol. It does not react with chromic acid in room temperature ( no reflux). Cr^+6 ions in the chromic acid are red-brown in colour. If reduction occur, the Cr^+6 ions will be reduced to Cr^+3 ions which are green in colour. I have done the above test ( no reflux) using a test tube, what i can observed is two distinct layers with colourless on the upper layer and dark green solution (precipitate?) on the lower layer. Theoretically, t-butyl does not react with chromic acid, but why the colour of Chromic acid changes from red brown to green?? Link to comment Share on other sites More sharing options...
chuinhen Posted April 15, 2006 Share Posted April 15, 2006 Are u sure ur t-butyl alcohol is pure ?? Or maybe your Chromic acid is not pure ?? Link to comment Share on other sites More sharing options...
hybrid04 Posted April 16, 2006 Share Posted April 16, 2006 Or perhaps the alcohol isnt pure? I was browsing wikipedia and stumbled on this Linkie It says its used to test for the presence of primary/secondary alcohols because of that selectivity so perhaps the chromium isnt the problem. Link to comment Share on other sites More sharing options...
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