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
Create a free account to view solution
View Solution FreeMore Mole Concept Questions
The equivalent weight of MnSO4 is half its molecular weight when it is converted to :...The molecular formula of a non stoichiometric oxide of vanadium is VO1.8. The oxide contain both V3+ and V4+ ions. The m...The density (in g mL-1) of a 3.60 M sulphuric acid solution that is 29% H2SO4 (Molar mass = 98 g mol-1) by mass will be...Vapour pressure of a liquid solution increases -...A compound contains 7 carbon atoms, 2 oxygen atoms and 9.96 × 10–24 g of other elements. The molecular mass of compound ...