127. Задачка по химии №012 714

814. Alkaline hydrolysis of α-bromopropionic acid CH3CHBrCOO-OH- → CH3CH(OH)COO-Br- is of the second order (first order for each of the reagents). The results of measurements of the current concentration of the Br- product as a function of the reaction time at 64 °C and initial concentrations of 0.200 mol/l α-bromopropionic acid and 1.070 mol/l alkali are quoted below. Determine the rate constant.

t, min 4.50 10.4 31.9 43.6 69.3 92.4

[Br–], mol/L 0.030 0.062 0.133 0.154 0.180 0.191

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