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Category > Engineering Posted 07 May 2017 My Price 6.00

An evaporator is fed continuously with 25 kg

  1. An evaporator is fed continuously with 25 kg/hr of a solution which contains 10% NaCl, 10% NaOH and 80% H2O. During evaporation, H2O is removed from the solution and NaCl precipitates as crystals which is settled and removed. The concentrated liquor leaving the evaporator contains 50% NaOH, 2% NaCl and 48% H2O. Calculate(i)Weight of salt precipitated per hour. 
    (ii) Weight of concentrated liquor leaving per hour.

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Alpha Geek
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Status NEW Posted 07 May 2017 08:05 AM My Price 6.00

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file 1494147089-Answer.docx preview (244 words )
A-----------n e-----------vap-----------ora-----------tor----------- is----------- fe-----------d c-----------ont-----------inu-----------ous-----------ly -----------wit-----------h 2-----------5 k-----------g/h-----------r o-----------f a----------- so-----------lut-----------ion----------- wh-----------ich----------- co-----------nta-----------ins----------- 10-----------% N-----------aCl-----------, 1-----------0% -----------NaO-----------H a-----------nd -----------80%----------- H2-----------O. -----------Dur-----------ing----------- ev-----------apo-----------rat-----------ion-----------, H-----------2O -----------is -----------rem-----------ove-----------d f-----------rom----------- th-----------e s-----------olu-----------tio-----------n a-----------nd -----------NaC-----------l p-----------rec-----------ipi-----------tat-----------es -----------as -----------cry-----------sta-----------ls -----------whi-----------ch -----------is -----------set-----------tle-----------d a-----------nd -----------rem-----------ove-----------d. -----------The----------- co-----------nce-----------ntr-----------ate-----------d l-----------iqu-----------or -----------lea-----------vin-----------g t-----------he -----------eva-----------por-----------ato-----------r c-----------ont-----------ain-----------s 5-----------0% -----------NaO-----------H, -----------2% -----------NaC-----------l a-----------nd -----------48%----------- H2-----------O. -----------Cal-----------cul-----------ate-----------(i)-----------Wei-----------ght----------- of----------- sa-----------lt -----------pre-----------cip-----------ita-----------ted----------- pe-----------r h-----------our-----------. -----------(ii-----------) W-----------eig-----------ht -----------of -----------con-----------cen-----------tra-----------ted----------- li-----------quo-----------r l-----------eav-----------ing----------- pe-----------r h-----------our-----------. -----------Sol-----------uti-----------on -----------
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