Two aqueous sodium hydroxide solutions containing 10 wt% NaOH (SG = 1.1089) and 50 wt% NaOH (SG = 1.5253) are mixed to form a 6.1 molar solution (SG = 1.2191). Note: standard atomic mass of sodium is 22.99 u.  a) Calculate the mass fraction of sulfuric acid, xNaOH, in the product solution.   b) Calculate the volumetric feed ratio (liters 10 wt% solution/ liter 50 wt% solution). (1) Draw a flow chart and set one unknown as a basis(i.e., 100kg) (2) Degree of freedom analysis  (3) Solve the unknown values  (4) Obtain feed ratio c) What feed rate of the 50% solution (L/h) would be required to produce 1200 kg/h 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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Two aqueous sodium hydroxide solutions containing 10 wt% NaOH (SG = 1.1089) and 50 wt% NaOH (SG = 1.5253) are mixed to form a 6.1 molar solution (SG = 1.2191). Note: standard atomic mass of sodium is 22.99 u. 



a) Calculate the mass fraction of sulfuric acid, xNaOH, in the product solution.

 

b) Calculate the volumetric feed ratio (liters 10 wt% solution/ liter 50 wt% solution).

(1) Draw a flow chart and set one unknown as a basis(i.e., 100kg)

(2) Degree of freedom analysis 

(3) Solve the unknown values 

(4) Obtain feed ratio




c) What feed rate of the 50% solution (L/h) would be required to produce 1200 kg/h of the product?



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