In the first-order decomposition of substance A the

Chapter 14, Problem 107

(choose chapter or problem)

In the first-order decomposition of substance A the following concentrations are found at the indicated times: Calculate the instantaneous rate of decomposition at t = 100 s. t = 100 s, 3A4 = 0.44 M; t = 150 s, 3A4 = 0.31 M. t = 0 s, 3A4 = 0.88 M; t = 50 s, 3A4 = 0.62 M; k3A43B4 ; ln3A4t = -kt + ln3A40. -rate reaction = t C = 1>2 = 0.693>k; A + B 2 C, 3A40 = 0.25 M. 0.10 M; 3A40 = 1.00 M; 3A40 = 3A40 ; 3A40 = 0.50 M A products 0.125 mol L-1 min-1. 8.0 mol L-1 min5.0 * 10 -1 ; -2 mol L-1 min-1 ; 0.020 mol L-1 min3A4 = 0.40 -1 ; M A products A products, 3A4 3B4 ; t 1>2 k = s-1 ; rate = k3A43B4. 2 A + B C t3A40 ; 1>2 ;