Which of the following compounds is hydrolyzed most slowly in aqueous ${\mathrm{Na}}_{\mathrm{OH}}$?

In the reaction of ${\mathrm{CH}}_3\mathrm{Br}$ with aqueous ${\mathrm{Na}}_2\mathrm{CO}{3}_2$, what is the major organic product?

Which set of reagents is appropriate to convert an alkene to a vicinal diol via syn addition?

What is the major organic product obtained when $1_{\mathrm{-bromopropane}}$ reacts with aqueous ${\mathrm{NaOH}}_{\mathrm{(aq)}}$ under reflux conditions?

Given the reaction of ${\mathrm{CH}}_3\mathrm{CH}=\mathrm{CH}2$ (propene) with $\mathrm{HBr}$ in the presence of peroxides, what would be the major product?

Which sequence of reagents will best accomplish the conversion of ${\mathrm{CH}}_3\mathrm{CH}\mathrm{Br}$ to ${\mathrm{CH}}_3\mathrm{CH}\mathrm{OH}$?

Which set of reagents would convert an $\mathrm{alkene}$ to a $\mathrm{vicinal}$ $\mathrm{diol}$ via $\mathrm{syn}$ addition?

What is the major organic product obtained when $2_{\text{methyl}}-2_{\text{butene}}$ reacts with $\mathrm{HBr}$ under standard conditions?

In the work up of an organic reaction, what is the primary purpose of adding a drying agent?