An evaporator is concentrating solutions coming from three different sources. The first source contains 20% NaCl by weight, the rest is water. The second source contains 10% by weight NaCl, 30% NaOH by weight, the rest water. The third source contains 25% NaCl by mole, 25 % NaOH by mole, the rest water. The feed streams are fed directly to the evaporator at the following flow rates; 100 kg/min for the first source, 7800 kg/min for the second source and 120 kg/min for the third source. If 70% of the original water is evaporated, calculate  (a) composition in % by weight of the product (b) the flow rate in kg/min of the product.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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An evaporator is concentrating solutions coming from three different sources. The first source contains 20% NaCl by weight, the rest is water. The second source contains 10% by weight NaCl, 30% NaOH by weight, the rest water. The third source contains 25% NaCl by mole, 25 % NaOH by mole, the rest water. The feed streams are fed directly to the evaporator at the following flow rates; 100 kg/min for the first source, 7800 kg/min for the second source and 120 kg/min for the third source. If 70% of the original water is evaporated, calculate  (a) composition in % by weight of the product (b) the flow rate in kg/min of the product.

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