Question

Hi I am Ranbir. My question is that what is an alum

Answer 1

Explanation:

An alum is a type of chemical compound, usually a hydrated double sulfate salt of aluminium with the general formula XAl ₂·12H ₂O, where X is a monovalent cation such as potassium or ammonium. By itself, "alum" often refers to potassium alum, with the formula KAl ₂·12H ₂O.

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Answer 2

Answer:

a colourless astringent compound which is a hydrated double sulphate of aluminium and potassium, used in solution in dyeing and tanning.

any of a number of analogous crystalline double sulphates of a monovalent metal (or group) and a trivalent metal.

Explanation:

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