== Please stop this! == 

 Petergans, please stop this revert war. Wikipedia is a collaborative project, and you must learn to respect the work of other editors. You have been told more than once in the past that nobody owns an article, and yet you insist on overwriting anything not written by you. After your last rewrite, I left the historical section completely alone because I know nothing about that, instead confining my edits to the lead and the contemporary section. But you were still not satisfied. You insist on recreating the history section in the lead, without giving any context or introduction. Unfortunately, this is NOT in accordance with Wikipedia style conventions. Unless you can gather community consensus to change guidelines regarding article leads, I'm afraid your edits are not acceptable. 

 You also insist on packing the contemporary section with irrelevant information about equilibrium calculation, when clearly all modern references to the law of mass action treat it as a kinetic postulate. I understand that equilibrium thermodynamics is your specialisation, but that does not mean you have to put in your knowledge where it does not belong. I think this has gone on long enough. If rewriting articles completely with no regard for other people's work is the only way you can edit, then I'm afraid Wikipedia is not the right place for you. Perhaps you will feel more at home writing a traditional encyclopedia. I understand that as an expert it may be frustrating to see your work edited by people with no traditional qualification, but that's the way Wikipedia works. You can take it or leave it, but edit warring will not change anything. Edit responsibly and we can reach a satisfactory conclusion.