ptepare the double salt potesh alum and submit for inspection
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It is called common alum. Equimolecular solutions of potassium sulphate and aluminium sulphate are mixed, solution is concentrated and on cooling, crystals of potash alum separate out.
K2SO4 + Al2(SO4)3. + 24H20 ==> K2SO4. Al2(SO4)3. 24H2O
K2SO4 + Al2(SO4)3. + 24H20 ==> K2SO4. Al2(SO4)3. 24H2O
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