| Popis: |
It has been found that the two-phase reactions of aqueous HCl, HOAc or H3PO4 with primary amine N1923 in chloroform are oscillating reactions. Their power-time curves were measured by the titration microcalorimetric method, and the induction period (tta). The first oscillating period (tp.1) and the second oscillating period (tp.2) were determined. The apparent activating parameters and the orders of the oscillating systems were calculated and the following relationships were established: for the oscillating system of hydrochloric acid tin ∞ c0.147HCI exp(1.35 × 103/T), tp.1 ∞ c0.241HCI, exp(4.33 × 103/T), tp.2 ∞ c0.290HCI exp(5.59 × 103/T); for the oscillating system of acetic acid, tin ∞ c0.883HOAc exp(2.32 × 103/T), tp.1 ∞ c0.399BOAc, exp(4.50 × 103/T), tp.2 ∞ c0.301HOAc exp(5.88 × 103/T); for the oscillating system of phosphoric acid, tin ∞ c1.14 exp(7.70 × 104), tp.1 ∞ c1.42 exp (1.14 × 104/T), tp.2 ∞ c1.47 exp (1.27 × 104/T) |
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