Chemistry - Liquid Solution Question with Solution | TestHub

A very dilute saturated solution of a sparingly soluble salt ${\mathrm{A}}_3{\mathrm{B}}_4$ has a vapour pressure of 20 mm of Hg at temperature T , while pure water exerts a pressure of 20.0126 mm Hg at the same temperature. Calculate the solubility ( $\mathrm{mol}/\ell \mathrm{t}$ ) of ${\mathrm{A}}_3{\mathrm{B}}_4$ at the same temperature. Represent solubility in scientific notation as $x\times 10^{-y}$. Find the value of $x+y$ ? Assume molality is equal to Molarity for dilute aqueous solution.