Four alcohols have the formula C4H9OH:
1-butanol, 2-butanol (or sec-butanol), isobutanol (or 2-methyl-1-propanol), and tert-butanol (or 2-methy;-2-propanol).
They are examples of isomers, or compounds that have the same molecular formula but different molecular structures. The below table gives data on the isomers:
Using the Clausius-Clapeyron equation, rank the isomers of butanol in order of decreasing vapor pressure at 25 °C. Does the ranking agree with any conventional wisdom based on the ΔvapH Values or the normal boiling points?