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Why does baking soda stay at the bottom when we were doing the experiment by putting baking soda with vinegar?
Question Date: 2016-11-02
Answer 1:

It stays at the botton because it is denser. Sodium bicarbonate (baking soda) has a density of 2.2 grams per cubic centimeter. Water has a density of 1.0 grams per cubic centimeter.

Following Archimedes' law, the denser material sinks to the bottom. Now, vinegar isn't pure water - it has acetic acid in it - but it's still not as dense as baking soda is, so the soda sinks to the bottom.

Answer 2:

When you mix baking soda and vinegar together, the final products of the reaction are carbon dioxide, water, and dissolved sodium acetate. However, if you add too much baking soda, not all of it will be reacted. Although baking soda dissolves in water, if there is too much baking soda it will not dissolve completely, and you will see it in in the bottom of your container.

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