Mole ConceptHard
Question
In a textile mill, a double effect evaporator system concentrates weak liquor containing 4% (by mass) caustic soda to produce a lye containing 25% solids (by mass). What is the weight of water evaporated per 100 g feed in the evaporator?
Options
A.125.0 g
B.50.0 g
C.84.0 g
D.16.0 g
Solution
In 100 g of weak liquor, the mass of caustic soda present = 4 g. As on evaporation, only loss in mass of water will occur, the final mass of solid must be 4 g. If ‘x’ g water is evaporated, then
[EQUATION]
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
The vapour density of a sample of SO3 gas is 28. Its degree of dissociation into SO2 and O2 is...An element ‘A’ reacts with the compound BO3 to produce A3O4 and B2O3. The number of moles of A3O4 produced if 1 mole eac...When 500 ml CO2 gas is passed through red hot charcoal, the volume becomes 700 ml. The volume of CO2 converted into CO i...For CuSO4·5H2O, which is the correct mole relationship?...At $T(K),100\text{ }g$ of $98\% H_{2}{SO}_{4}(w/w)$ aqueous solution is mixed with 100 g of $49\% H_{2}{SO}_{4}(w/w)$ aq...