# Does a gas form when vinegar and baking soda are mixed?

Oct 18, 2016

What did you see when you did the experiment? I am betting that you saw copious bubbling.

#### Explanation:

Vinegar is approx. 20% acetic acid in water. This acid is certainly strong enough to protonate baking soda.

${H}_{3} C - C {O}_{2} H \left(a q\right) + N a H C {O}_{3} \left(a q\right) \rightarrow {H}_{3} C - C {O}_{2}^{-} N {a}^{+} + C {O}_{2} \left(g\right) \uparrow + {H}_{2} O$

When you bake a cake, you typically add baking soda. The baking soda reacts with the acidic eggs, and butter, and the released carbon dioxide, raises your cake, so it has a nice spongy texture. Yumm.

How would you confirm that the released gas in the experiment was carbon dioxide?