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[BW3991]

Hi all, I'm new to the forum and have an assignment for my university module which I'm having trouble with.

 The general question statement is as follows:

 

Consider the following reaction schemes with one reversible and one irreversible, first order reaction occurring in series. You may assume no change in fluid density during the reactions which take place at a constant temperature and that the reactor is instantaneously well mixed.

A <==> B --> C with associated rate constants k1 forward and k2 backward for the first reaction and k3 the

forward rate constant for the second reaction.

 

 

Followed by a series of small questions, the first of which is:

 By performing a material balance, derive three simultaneous differential equations describing, respectively, the time dependence of the concentrations of species A, B and C. Provide the equations and show their derivation.

 

There are other questions following this but once I have overcome this inital hurdle I feel I will be fine with the remainder. Any help would be appreciated, below is my answer so far but I think it is wrong as all I've done is figured out the rate equations. Apologies for lack of subscripts.

 

 

dCA / dt = rA = - k1 CA + k2 CB

dCB / dt = rB = k1 CA - k2 CB - k3 CB

dCC / dt = rC = k3 CB

[breizh]

BW3991

Your textbook should support your work . I 've attached a power point presentation to help you.

 

Good luck .

Breizh