Chemistry - Chemical Equilibrium Question with Solution | TestHub

\begin{gathered}{}\text{The}\text{ }\text{equilibrium}\text{ }\text{water}\text{ }\text{pressure}\text{ }\text{is}\text{ }\text{(1.024}\times\text{10}^{\text{-27}}\text{)}^{\text{1/10}}\text{=0.002}\text{ }\text{atm.}\text{ }\text{Efflorescence}\text{ }\\{}\text{occurs}\text{ }\text{when}\text{ }\text{the}\text{ }\text{surrounding}\text{ }\text{water}\text{ }\text{pressure}\text{ }\text{is}\text{ }\text{below}\text{ }\text{this}\text{ }\text{value,}\text{ }\text{driving}\text{ }\\{}\text{dehydration}\text{ }\text{forward.}\\{}\text{The}\text{ }\text{limiting}\text{ }\text{relative}\text{ }\text{humidity}\text{ }\text{is}\text{ }\text{100(0.002/0.04)=5%.}\\{}\text{Efflorescence}\text{ }\text{therefore}\text{ }\text{occurs}\text{ }\text{below}\text{ }\text{5%}\text{ }\text{relative}\text{ }\text{humidity.}\\{}\text{This}\text{ }\text{is}\text{ }\text{option}\text{ }\text{(d).}\end{gathered}