The following reaction was monitored as a function of time: A plot of 1/[AB] ver

Question

The following reaction was monitored as a function of time: A plot of 1/[AB] versus time yields a straight line with slope 5.6 X 10^-2 (M.s)^-1. Part D If the initial concentration of AB is 0.290M , and the reaction mixture initially contains no products, what are the concentrations of A and B after 80s ? Enter your answers numerically separated by a comma. Express your answer using two significant figures The following reaction was monitored as a function of time: A ? B + C A plot of ln [A] versus time yields a straight line with slope -4.1 X 10^-3 /s. Part C What is the half-life Express your answer using two significant figures.

Explanation / Answer

1) as the relation is

1/[AB] = kt + 1/[AB]o

replace [AB]o for 0.290, k for 5.6*10-2 and t for 80 s... so,

1/[AB]80s = 7.93

[AB]80s = 0.126

2) Now, in t1/2, [AB] = [AB]o / 2, now replace the same values but left "t" as the unknown...

So, t= 61 s.

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