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1 Strawberries contain about 15 wt% solids and 85 wt% water

Chemistry

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1 Strawberries contain about 15 wt% solids and 85 wt% water. To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass.

a) Draw and label a flowchart for this process.

b) Do the degree-of-freedom analysis and show that the system has zero degrees of freedom.

c) Write/solve the required material balances for the stated process.

 

2. 286 pounds of Na₂CO₃,10H₂O crystals are dropped into 200 pounds of a saturated solution of Na₂CO₃ in water at 100 C. What percentage of Na₂CO₃in Na₂CO₃,10H₂O is recovered in the precipitated solid. The precipitated solid is Na₂CO₃,1H₂O. Data at 100C: the saturated solution is 31.2 mass% Na₂CO_3, molecular weight of Na₂CO₃is 106.

a) Draw and label a flowchart for this process.

b) Do the degree-of-freedom analysis and show that the system has zero degrees of freedom.

c) Write/solve the required material balances for the stated process.