why Potash alum is added to water in the loading tank and is allowed to stand for some time.
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Alum helps in purifying water by aluminium which coagulates the mud particles. Because of the high charge on the aluminium ion (Al+3), it helps the small particles of suspended solids to group together until they are of such size that they sink and can be removd.
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Answered by
2
Answer:
Alum helps in purifying water by aluminium which coagulates the mud particles. Because of the high charge on the aluminium ion (Al+3), it helps the small particles of suspended solids to group together until they are of such size that they sink and can be removed.
Step-by-step explanation:
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