What does it mean when the order of reaction isn't an integer, e.g., a reaction order of 2.43. Not with something acting as a catalyst but rather as a inhibitor. Why does the inhibitor produce an unusual reaction order? Specifically fluoride ions slowing down the reaction between calcium carbonate and acid by forming calcium fluoride.

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    $\begingroup$ Never heard of the phrase "decimal point orders." Reacting calcium carbonate with hydrofluoric acid would be slow since calcium fluoride is insoluble in aqueous solution. Hence the calcium fluoride would coat the calcium carbonate. $\endgroup$ – MaxW Dec 13 '15 at 16:44
  • $\begingroup$ I guess I meant a fractional order with respect to an inhibitor? I've heard of the term broken order reaction but I've no definite source to reference $\endgroup$ – Radhika Dec 13 '15 at 20:51
  • $\begingroup$ Semi-related answer. $\endgroup$ – Nicolau Saker Neto Dec 13 '15 at 21:49
  • $\begingroup$ Can you provide a reference for the example reaction and data you are describing? $\endgroup$ – jerepierre Dec 14 '15 at 17:26

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