: Elements of Reactor Design (10 points) (a) A reaction was carried out in a con

Question

: Elements of Reactor Design (10 points) (a) A reaction was carried out in a constant-volume batch reactor where the following concen ments were recorded as a function of time: tration measure- t (min) 0 50 100 150 200 250 300 Ca (mol L-) 0.050 0.038 0.030 0.025 0.022 0.019 0.017 slope 0.1248 intercept 20.12 slope- 0.0001 ntercept 0.04 slope- -0.0034 intercept--3.09 0.08 2.8 0.04 3.2 t -3.4 E 3.6 -3.8 2 40 0.03 0.02 0.01 300 42 100 200 300 100 200 300 100 200 t (min) t (min) t (min) i. (1 point) Based on the plots shown above and assuming -A kC, is this rate best approximated as zero, first, or second order in A? Briefly justify your answer What is her e constant ka cording to the eaction ordery uch seinPart07Clearlystate your units.

Explanation / Answer

i. From the 3 plots above, 1/CA vs t graph shows that the plots lie accurately on the line of the equation: 1/CA - 1/CAo = kt , which corresponds to second order kinetics.
Therefore, the reaction rate is of second order.

ii. The value of rate constant k, is the slope of the graph
So, k = 0.1248 L mol-1 s-1

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