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linglearning corr X C The Rate Constant For Ti X ibiscms/mod/ibis/view.php?id 31

ID: 489646 • Letter: L

Question

linglearning corr X C The Rate Constant For Ti X ibiscms/mod/ibis/view.php?id 3184155 Grad, Print calculator Periodi Table ouestion 14 of 30 Inoomed incorect. Sapling Learning The rate constant for this second order reaction is 0.990 M-1.s 1 at 300 c. products How long (in seconds) would it take for the concentration of A to decrease from 0.970 M to 0.280 M? 3.43 AOPrevious Give up & View solution Try Again Next Exit The integrated rate equation for a second-order reaction is kt where [Alt is the concentration of A at time t lAlois the initial concentration of A, and k is the rate constant.

Explanation / Answer

use integrated rate law for 2nd order reaction:
1/[A]o = 1/[A] - k*t
1/0.970 = 1/0.280 - 0.990*t
0.990*t = 2.54
t = 2.57 s

Answer: 2.57 s