Chemical Engineering > GATE 2014 > Material Balance with Recycle
Two elemental gases (A and B) are reacting to form a liquid (C) in a steady state process as per the reaction A+B→C. The single-pass conversion of the reaction is only 20% and hence recycle is used. The product is separated completely in pure form. The fresh feed has 49 mol% of A and B each along with 2 mol% impurities. The maximum allowable impurities in the recycle stream is 20 mol%. The amount of purge stream (in moles) per 100 moles of the fresh feed is
Correct : 10.0
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