Chapter 6 Self Test

Concentration-Time Trajectories

1. The following concentration-time trajectories were observed in a batch reactor

Which of the following reaction pathways best describes the data:

Solution

2. Sketch the concentration-time trajectory for the reaction:

Solution

Solution: Part 1

Choice B is the answer. Choices A and C are incorrect because they show species B eventually consumed, which is clearly not the case.

Back to Problem 1

Problem 2

Solution: Part 2

(1) B virtually consumed so no more D can be produced in reaction 2.      

(2) Rates of Consumption of A and Ba are virtually the same.                   

(3) Rate of consumption of B greater than that of A owing to Reaction 2.

Below is the polymath code typed in to produce the graph above.

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