Mixed Order
In a mixed-order reaction, the order of a reaction changes in the course of a reaction as a result of changing variables such as pH. An example is the oxidation of an alcohol to a ketone by a ruthenate (RuO42−) and a hexacyanoferrate, the latter serving as the sacrificial catalyst converting Ru(IV) back to Ru(VI): the disappearing-rate of the ferrate is zero-order with respect to the ferrate at the onset of the reaction (when its concentration is high and the ruthenium catalyst is quickly regenerated) but changes to first-order when its concentration decreases.
Read more about this topic: Order (chemistry)
Famous quotes containing the words mixed and/or order:
“It is not too much to say that next after the passion to learn there is no quality so indispensable to the successful prosecution of science as imagination. Find me a people whose early medicine is not mixed up with magic and incantations, and I will find you a people devoid of all scientific ability.”
—Charles Sanders Peirce (1839–1914)
“I suppose that one of the psychological principles of advertising is to so hammer the name of your product into the mind of the timid buyer that when he is confronted with a brusk demand for an order he can’t think of anything else to say, whether he wants it or not.”
—Robert Benchley (1889–1945)