Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study

Asam Hussein Ali; Mudeer Mubarak Merza; Mohammed Mahdi Mohammed

doi:10.18596/jotcsa.1819170

Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study

Abstract

The investigation focuses on the effects of pressure on equilibrium positions of gas-phase reactions, based on both theoretical calculations and experimental data. Using Le Chatelier's principle and the ideal gas law, we derived the mathematical relationships that describe how changes in pressure affect equilibrium constants, as well as the concentrations of reactants and products. A series of experiments were conducted in a high-pressure reactor system to complement the theoretical study, measuring the selected reactions before, during, and after the application of pressure. In this report, we demonstrate that increasing pressure shifts the equilibrium toward the side with fewer moles of gas, a prediction supported by theory and other researchers. Furthermore, we measured the equilibrium constants at various pressures and temperatures to quantify these changes using the van't Hoff equation, which adds a thermodynamic view to the study. The results substantiate not only the effect of pressure on reaction rates but also its significance in industry, as specific reactions can be carried out at elevated-pressure conditions, thereby improving process yield. The study provides an overview of the potential impact of pressure on chemical equilibria and its application to future studies on high-pressure synthesis and reaction engineering in fields such as petrochemistry, materials science, and other engineering processes. This study ultimately indicates the necessity of considering pressure in process design or process optimization.

Keywords

References

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Details

Primary Language

English

Subjects

Chemical Thermodynamics and Energetics

Journal Section

Research Article

Authors

Asam Hussein Ali ^*
0009-0001-6082-6125
Iraq

Mudeer Mubarak Merza This is me
Iraq

Mohammed Mahdi Mohammed This is me
Iraq

Publication Date

April 25, 2026

Submission Date

November 6, 2025

Acceptance Date

February 10, 2026

Published in Issue

Year 2026 Number: 2026-1

DOI

https://doi.org/10.18596/jotcsa.1819170

IZ

https://izlik.org/JA42CR72GL

Cite

RIS / Bibtex

APA

Hussein Ali, A., Merza, M. M., & Mohammed, M. M. (2026). Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study. Journal of the Turkish Chemical Society Section A: Chemistry, 2026-1, 1-12. https://doi.org/10.18596/jotcsa.1819170

AMA

1.Hussein Ali A, Merza MM, Mohammed MM. Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study. JOTCSA. 2026;(2026-1):1-12. doi:10.18596/jotcsa.1819170

Chicago

Hussein Ali, Asam, Mudeer Mubarak Merza, and Mohammed Mahdi Mohammed. 2026. “Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study”. Journal of the Turkish Chemical Society Section A: Chemistry, no. 2026-1: 1-12. https://doi.org/10.18596/jotcsa.1819170.

EndNote

Hussein Ali A, Merza MM, Mohammed MM (April 1, 2026) Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study. Journal of the Turkish Chemical Society Section A: Chemistry 2026-1 1–12.

IEEE

[1]A. Hussein Ali, M. M. Merza, and M. M. Mohammed, “Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study”, JOTCSA, no. 2026-1, pp. 1–12, Apr. 2026, doi: 10.18596/jotcsa.1819170.

ISNAD

Hussein Ali, Asam - Merza, Mudeer Mubarak - Mohammed, Mohammed Mahdi. “Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study”. Journal of the Turkish Chemical Society Section A: Chemistry. 2026-1 (April 1, 2026): 1-12. https://doi.org/10.18596/jotcsa.1819170.

JAMA

1.Hussein Ali A, Merza MM, Mohammed MM. Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study. JOTCSA. 2026;:1–12.

MLA

Hussein Ali, Asam, et al. “Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study”. Journal of the Turkish Chemical Society Section A: Chemistry, no. 2026-1, Apr. 2026, pp. 1-12, doi:10.18596/jotcsa.1819170.

Vancouver

1.Asam Hussein Ali, Mudeer Mubarak Merza, Mohammed Mahdi Mohammed. Influence of Pressure on Chemical Equilibrium: A Theoretical and Experimental Study. JOTCSA. 2026 Apr. 1;(2026-1):1-12. doi:10.18596/jotcsa.1819170