5. Chirality

Which of the following types of compounds is most likely to undergo racemization when treated with aqueous acid or base ($H{2}_{}O$ + $H+$ or $\mathrm{OH}-$)?

Choose the best explanation for why a racemic mixture does not rotate plane-polarized light.

Given the compound ${\mathrm{CH}}_3\mathrm{CHBrClF}$, determine whether it is optically active or optically inactive.