A sealed flask at constant temperature contains the equilibrium reaction SO _3(g) SO…

CHEMISTRY · Single correct · AP · Chemistry · Equilibrium · Equilibrium

Problem

A sealed flask at constant temperature contains the equilibrium reaction SO3(g)⇌SO2(g)+12 O2(g).\text{SO}_3(g)\rightleftharpoons \text{SO}_2(g)+\tfrac12\,\text{O}_2(g). At time t1t_1 the concentration of SO3\text{SO}_3 drops instantaneously, while the concentrations of SO2\text{SO}_2 and O2\text{O}_2 rise instantaneously. Over the next several minutes, SO3\text{SO}_3 slowly increases and both SO2\text{SO}_2 and O2\text{O}_2 slowly decrease, but none of the species return to their original values. Which of the following most likely occurred at t1t_1? (a) The volume of the flask was decreased at constant temperature (b) An inert gas was injected into the flask at constant volume (c) Some SO3(g)\text{SO}_3(g) was removed from the flask (d) Additional SO3(g)\text{SO}_3(g) was injected into the flask

Related theory

Browse the problem library