Chemistry - GOC Question with Solution | TestHub

$\mathrm{B}$ is catechol. Reported solubilities near room temperature are about 43 g per 100 mL for catechol at 20 $\mathrm{C}$, compared with about 70 g ${\mathrm{L}}^{-1}$ for hydroquinone at 25 $\mathrm{C}$. Their phenol/toluene alternatives are less soluble. Solubility depends on crystal-lattice energy as well as hydrogen bonding to water; counting intermolecular hydrogen bonds alone cannot establish the order. Therefore the hydroquinone A key is corrected to $\mathrm{B}$.