The correct sequence of the ions shown,in order of increasing basicity,is: A)CH₃CH₂:^-

Question

The correct sequence of the ions shown,in order of increasing basicity,is: A)CH₃CH₂:^- < CH₂=CH:^- < HC$\equiv$C:^- B)CH₃CH₂:^- < HC$\equiv$C:^- < CH₂=CH:^- C)HC$\equiv$C:^- < CH₃CH₂:^- < CH₂=CH:^- D)CH₂=CH:^- < HC$\equiv$C:^- < CH₃CH₂:^- E)HC$\equiv$C:^- < CH₂=CH:^- < CH₃CH₂:^-

Quizplus · Accepted Answer

The correct sequence is based on the electron-donating or withdrawing effects of the groups attached to the ions. The more electron-donating groups an ion has, the more basic it is because it can better share its electrons. The ion with the CF3 group is the least basic due to the strong electron-withdrawing effect of fluorine, making it less willing to share electrons. The ion with the phenyl group (benzene ring) is more basic than the CF3-substituted ion but less basic than the ion with the CH3 group, which is the most basic due to the electron-donating effect of the methyl group.

The Correct Sequence of the Ions Shown,in Order of Increasing ≡\equiv≡

The Correct Sequence of the Ions Shown,in Order of Increasing $\equiv$