During the mixing of a primary or secondary alcohol with Chromic Anhydride Reagent, the following change occurs (equation unbalanced):
CrO3(aq) + H2SO4(aq)  Cr2(SO4)3(s)
i. What kind of reaction has taken place? Explain by examining the partial reaction equation given.
ii. What is the blue-green precipitate that was observed at the bottom of each well in which a reaction occurred?
iii. Why did the test solutions containing primary and secondary alcohols, initially become bluegreen in colour?