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[Comments] (2) "A large bubble rises to the surface and pops": The bathroom sink was draining slowly. I didn't want to buy a plunger or a specialized drain-cleaning chemical so I tried some Bill Nye the Science Guy-level science and made a fourth grade science fair in the sink. I poured some baking soda into the sink and washed it down with a minimum of water. Then I poured in some vinegar. It bubbled. Eventually I shut the drain in hopes that the CO2 would build up pressure in the pipes and eject whatever was clogging the drain, but it didn't seem to be necessary. The sink works fine now.

Unlike more common uses of the deadly vinegar/baking soda combo, this would actually be a good fourth-grade science fair project.


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