Question: note this question from chapter material balance / from subject process calculation please write the answer with steps An aqueous solution containing 60% Na 2

note this question from chapter material balance / from subject process calculation

please write the answer with steps

An aqueous solution containing 60% Na₂S₂O₃ and 1% soluble impurities is diluted with water and fed to a crystallizer where it is cooled in order to crystallize Na₂S₂O₃.5H₂O. The crystals carry 0.05 kg of solution (excluding impurities) per kg of crystals. The free water present in the adhering solution is removed on drying the crystals. The final dried product contains not more than 0.1% impurity. The solubility of the pentahydrate is 1.5 kg Na₂S₂O₃.5H₂O/kg free water.

On the basis of 100 kg of 60% solution

Sketch the system with all streams in and leave the unit
Evaluate the amount of water in kilograms added before cooling.
Evaluate the amount of crystals formed.
Evaluate the percentage recovery of the Na₂S₂O₃ in the dried hydrated crystals

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