Question

thanks

Answer 1

phase equilibrium is a condition in which multiple states of matter of the same substance co-exist at a certain temp and pressure. the matter is still undergoing phase changes but the rates of conversion "cancel" each other out, so the concentrations of each phase are consistent over time

in this particular scenario, there should be both solid iodine and purple gas, with sublimation and deposition going on at roughly equal rates, so the overall conc. of each state is constant