Will baking soda neutralize acetic acid?

What Happens When You Mix Baking Soda and Vinegar?

It’s a classic kitchen experiment: pour baking soda into vinegar and watch the fizz. But beyond the bubbly reaction, there’s real chemistry at work. Baking soda, or sodium bicarbonate, is a base. Vinegar, which contains acetic acid, is a weak acid. When combined, they engage in a neutralization reaction—one cancels out the other.

This reaction doesn’t just produce harmless fizz—it creates carbon dioxide gas, water, and a small amount of sodium acetate. The bubbling you see is the carbon dioxide escaping. Once the reaction settles, the resulting solution is less acidic than vinegar alone, meaning the baking soda has indeed neutralized some of the acetic acid.

This simple interaction has practical uses. For instance, it’s often used in homemade cleaning solutions, where the effervescence helps lift grime, or in baking, where the release of gas helps dough rise. However, because the reaction is fast and short-lived, it’s not ideal for long-term acid control.

It’s worth noting that while baking soda can neutralize acetic acid, the balance matters. Too much vinegar, and the solution stays acidic; too much baking soda, and it becomes slightly basic. The key is proportion. In household applications, this balance often doesn’t need to be exact—but in scientific or culinary contexts, precision counts.

So yes, baking soda neutralizes acetic acid—but not silently. It makes quite a show of it.