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Lavinia Carroll

Feb 20, 2025

What is the chemical formula of the contents in a can of Drano (not liquid) and there are small pieces of Al.?

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Mina Herzog

Feb 20, 2025

That formula of Drano is principally sodium hydroxide, NaOH. The reaction with the aluminum when water is added, produces hydrogen gas, like this:6 NaOH + 2 Al → 3 H2 + 2 Na3AlO3 But mostly there is a large excess of NaOH which presumably softens whatever is clogging your drain.... Show More
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