A pan contains 6,420 lbs of an aqueous solution at 104 0C. The said solution is 29.6% anhydrous sodium sulphate, the rest being H2O. The solution is cooled without evaporation to 25 0C at which Na2SO4•10H2O crystals form or separate. The remaining solution (mother liquor) is found to contain 16.1% anhydrous Na2SO4. (a) What is the weight of the mother liquor? (b) What is the % yield of the anhydrous solute? (c) What is the weight composition of the mother liquor?

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Introduction and Basic Calculations in Multiphase Systems

Chemical calculations involve material and energy balance calculations which enable engineers to calculate material and energy requirements in various chemical processes. In addition to this, chemical calculations help to study the behavior and properties of gases, liquids, and their mixtures.