(c)(d)(e)(f)(g)4.28(a)The proton-transfer transition state can represent the following reaction, or its reverse:When the reaction proceeds as drawn, the stronger acid (hydrogen bromide) is on the left, theweaker acid (isopropyl alcohol) is on the right, and the equilibrium lies to the right.(b)Hydroxide is a strong base; methyloxonium ion is a strong acid.4.29(a)This problem reviews the relationship between logarithms and exponential numbers. We needto determine Ka, given pKa.The equation that relates the two ispKa log10KaThereforeKa10pKa103.483.3 104HOHCH3OHCH3HOHOHHydroxide ion(base)Methyloxoniumion (acid)Water(conjugate acid)Methanol(conjugate base)K1(CH3)2CH(CH3)2CHOOHOHBrHBase(CH3)2CHConjugate acid(weaker acid)Ka1017ConjugatebaseAcid (stronger acid)Ka109BrBrH2SO4HSO4Fluoride ion:baseSulfuric acid: acid(stronger acid, Ka105)Hydrogen fluoride:conjugate acid(weaker acid, Ka104)Hydrogensulfate ion:
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