In the gravimetric method forthe determinationof Sulphate ion we can addotion of Barium chloride. Then the Barium ion isreacted with Sulphate ion to form awhite color barium sulphateprecipitate . Barium sulfate is a whitecrystalline solid with the chemical formula BaSO4. It is insoluble in water andother traditional solvents but is soluble in concentrated sulfuricacid. Ba2+(from BaCl2)+SO42- BaSO4 (s) Sulfate is determinedgravimetrically by precipitating as BaSO4 by the additonof BaCl2 solution. To ensure thatSO42- in the solution has completedprecipitated, a few drops of BaCl2 solution is added tothe clear supernatent solution. If any cloudiness appears after theaddition, th precipitation of SO42- is noycomplete. 2) Digestion is a process in which the precipitate isheated extensively with the mother liquor for a certain period oftime. Digestion helps in the dissolution of small crystals of theprocipitate and formation of larger crystals. It alsoprevents the precipitation of ions (co-precipitaion) otherthan that being precipitated Solution In the gravimetric method forthe determinationof Sulphate ion we can addotion of Barium chloride. Then the Barium ion isreacted with Sulphate ion to form awhite color barium sulphateprecipitate . Barium sulfate is a whitecrystalline solid with the chemical formula BaSO4. It is insoluble in water andother traditional solvents but is soluble in concentrated sulfuricacid. Ba2+(from BaCl2)+SO42- BaSO4 (s) Sulfate is determinedgravimetrically by precipitating as BaSO4 by the additonof BaCl2 solution. To ensure thatSO42- in the solution has completedprecipitated, a few drops of BaCl2 solution is added tothe clear supernatent solution. If any cloudiness appears after theaddition, th precipitation of SO42- is noycomplete. 2) Digestion is a process in which the precipitate isheated extensively with the mother liquor for a certain period oftime. Digestion helps in the dissolution of small crystals of theprocipitate and formation of larger crystals. It alsoprevents the precipitation of ions (co-precipitaion) otherthan that being precipitated.

1. In the gravimetric method forthe determinationof Sulphate ion we can addotion of Barium
chloride.
Then the Barium ion isreacted with Sulphate ion to form awhite color barium
sulphateprecipitate .
Barium sulfate is a whitecrystalline solid with the chemical formula BaSO4.
It is insoluble in water andother traditional solvents but is soluble in concentrated
sulfuricacid.
Ba2+(from BaCl2)+SO42- BaSO4 (s)
Sulfate is determinedgravimetrically by precipitating as BaSO4 by the additonof BaCl2
solution. To ensure thatSO42- in the solution has completedprecipitated, a few drops of BaCl2
solution is added tothe clear supernatent solution. If any cloudiness appears after theaddition, th
precipitation of SO42- is noycomplete.
2) Digestion is a process in which the precipitate isheated extensively with the mother liquor for
a certain period oftime. Digestion helps in the dissolution of small crystals of theprocipitate and
formation of larger crystals. It alsoprevents the precipitation of ions (co-precipitaion) otherthan
that being precipitated
Solution
In the gravimetric method forthe determinationof Sulphate ion we can addotion of Barium
chloride.
Then the Barium ion isreacted with Sulphate ion to form awhite color barium
sulphateprecipitate .
Barium sulfate is a whitecrystalline solid with the chemical formula BaSO4.
It is insoluble in water andother traditional solvents but is soluble in concentrated
sulfuricacid.
Ba2+(from BaCl2)+SO42- BaSO4 (s)
Sulfate is determinedgravimetrically by precipitating as BaSO4 by the additonof BaCl2
solution. To ensure thatSO42- in the solution has completedprecipitated, a few drops of BaCl2
solution is added tothe clear supernatent solution. If any cloudiness appears after theaddition, th
precipitation of SO42- is noycomplete.
2) Digestion is a process in which the precipitate isheated extensively with the mother liquor for
a certain period oftime. Digestion helps in the dissolution of small crystals of theprocipitate and

2. formation of larger crystals. It alsoprevents the precipitation of ions (co-precipitaion) otherthan
that being precipitated