Answer to Question #234278 in Chemical Engineering for Lucky

Question

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.

Answer 1

For this first reaction, we can observe that there is a 2:1 ratio for NO₃ and NO_2.

It is evident that NO is produced in two separate occasions in the process of consuming NO_3.

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:

O_2: 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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