Question
Download Solution PDFWhich of the following is potash alum?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is K2SO4Al2(SO4)3.24H2O
Key Points
- Potash alum or potassium aluminum sulfate is a double salt of Potassium and Aluminium.
- It is also known as fitkari.
- Formula- K2SO4.Al2(SO4)3.24H2O ( sometimes also written as KAl(SO4)2·12H2O)
Additional Information
- Potash alum
- It is a coagulant widely used in water treatment.
- Used as a Fire Retardant.
- An aqueous solution of potash alum is acidic.
- Highly soluble in water.
- Double Salt-
- A crystalline salt in which there are two different anions and/or cations.
- Double salts only exist in the solid.
- When dissolved they act as a mixture of the two separate salts.
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