An alcohol, X has an Mr of 74 and percentage composition of 64.9% Carbon, 13.5% Hydrogen and 21.6% Oxygen. It does not turn potassium dichromate (VI) green. Determine the structural formula of X, and state its name.
64.9/12 = 5.40833
21.6/16 = 1.35
5.40833/1.35 = 4 so 4 Carbons
13.5/1.35 = 10 so 10 Hydrogens
1.35/1.35 = 1 so 1 Oxygen
4x12+10+16 = 74 so emperical formula = Molecular formula
it is a tertiary alcohol because it does not turn potassium dichromate green
(CH3)3COH
2-methylpropan-2-ol
MB
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