Removing hydrogen iodide from its equilibrium mixture leaves the concentrations of all three species:

1. Different ways of stressing the same equilibrium give different final compositions. 2. The three different ways of inducing this stress result in three different changes in the composition of the equilibrium mixture. 3. If hydrogen iodide is removed, the concentrations of all three species will be lower when equilibrium is reestablished. 4. The system rebuilds some product but never recovers what was taken. _Source: OpenStax Chemistry 2e (CC BY 4.0), Ch 13 'Fundamental Equilibrium Concepts', sections 13.1-13.4_