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# Answer to Question #234278 in Chemical Engineering for Lucky

Question #234278

At present the conversion is 66.7% for the elementary second order reaction 2A→2R when operating in an isothermal plug flow reactor with a recycle ratio of unity. Determine the conversion if recycle is shut off.

1
2021-09-12T00:32:17-0400

For this first reaction, we can observe that there is a 2:1 ratio for NO3 and NO2.

It is evident that NO is produced in two separate occasions in the process of consuming NO3.

Therefore, if the rate of consumption of NO3  is 2.2 x105

Then: 1/5 the rate of production of O2  gives us 4.4 x105

The conversion if the recycle is shut off:

The proceeding reaction would be as follows:

O2: NO3  is 2: 1

NO3 is consumed at the rate of rate of 2.3 mill per minute

Product of O2  would also be 2.3 per minute

The conversion would be 2.3 per mil per minute

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