Allylic halides have the structure (a) Show how the first-order ionization...

Allylic halides have the structure

(a) Show how the first-order ionization of an allylic halide leads to a resonance-stabilized cation.

(b) Draw the resonance structures of the allylic cations formed by ionization of the following halides.

(c) Show the products expected from S_N1 solvolysis of these halides in ethanol.