Le Chatelier Response

TL;DR

This paper explores how open chemical systems respond to external stresses, analyzing the influence of soluble and insoluble constraints on the transition to new equilibrium states using thermodynamic models.

Contribution

It introduces a model distinguishing soluble and insoluble constraints, revealing their effects on the Le Chatelier response and system bifurcations during equilibrium shifts.

Findings

Soluble constraints activate a wider range of reaction shift powers.

Insoluble constraints can suppress higher powers and induce bifurcations.

The model explains different transition behaviors in chemical systems.

Abstract

The article investigates a possible influence of the open chemical system reaction to the external impact on the system transition to a new equilibrium. Potential system response is taken as a combination of various powers of the reaction shift from thermodynamic equilibrium, leading to different equations for the system Gibbs' free energy change. The investigation is focused on two types of the constraints which are put on the system - the "soluble", disappearing when the stressed system achieves its new equilibrium, as it happens in result of a temperature change, and "insoluble", still remaining active in the new equilibrium. It was assumed that the "soluble" constraints activate a wider selection of the reaction shift powers as the system Le Chatelier response, providing for a smooth transition between two equilibrium states. The "insoluble" constraints may suppress some higher powers in the response set, and transition may be accompanied by bifurcations.