MgNH4PO4.6H2O loses H2O stepwise as it is heated. Between 40°C and 60°C the
monohydrate (MgNH4PO4.H2O) is formed and above 100°C the anhydrous material
(MgNH4PO4) is formed. Why, then, do the instructions say to air dry the precipitate
and filter paper at room temperature?
Ans :
The precipitate formed in the process is MgNH4PO4.6H2O.
Since the precipitate loses its water of crystallization and becomes anhydrous compound when heated , so the compound is instructed to air dry at the room temperature.
If the compound loses its water of crystallization and we are unaware about it , then the assumption of number of moles of desired component will be calculated incorrect.
MgNH4PO4.6H2O loses H2O stepwise as it is heated. Between 40°C and 60°C the monohydrate (MgNH4PO4.H2O) is...
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A. Precipitation of CaC,O, H,O from the Salt Mixture Unknown number Trial 1 Trial 2 1. Mass of beaker (g) 59.45 59.45 5.oS Mass of beaker and salt mixture (g) 2. 3. Mass of salt mixture (g) I, oo oS 4. Mass of filter paper (g 5. Mass of filter paper and product after air-dried or oven-dried (g) 0, 35 6. Mass of dried product (g) 7....