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@FergFerg31
10 ай бұрын
My question is how did he know to use Alum and in the Alum being the solution, what was the cause?
@GokceCapital
10 ай бұрын
I believe he tested three different solutions on three samples of the water and alum was the one that cleared the water in the sample jar.
@henrik66le37
10 ай бұрын
Alum creates positively charged ions when reacting to water. The samples contains mostly negatively charged particles, which are attracted by the positively charged ions in a coagulation process. Had the particles been mostly positively charged, the gypsum would have helped.
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