The pH of Vinegar with Sodium Bicarbonate

The pH value of vinegar with sodium bicarbonate (baking soda) is approximately 7, which is considered neutral. This is because when vinegar, an acid, reacts with baking soda, a base, they neutralize each other, forming a new substance that is neither acidic nor basic.

Understanding the pH Scale

The pH scale ranges from 0 to 14, with 7 being neutral. Anything below 7 is acidic, and anything above 7 is basic. Vinegar typically has a pH of around 3, making it acidic, while baking soda has a pH of around 9, making it basic.

The Reaction Between Vinegar and Baking Soda

ph of vinegar with sodium bicarbonateImage source: OpenStax College

When vinegar and baking soda react, they produce a gas called carbon dioxide, which is responsible for the fizzing or bubbling effect. This reaction can be used for various purposes, such as cleaning, making volcanoes for science experiments, or even launching film canister rockets.

It’s important to note that while vinegar and baking soda can be used for cleaning, they should not be mixed in equal amounts. When combined, the acid in vinegar breaks down baking soda, releasing carbon dioxide gas. If the mixture is not kept in either the acidic or basic side of the neutral value (7), it can become less effective for cleaning purposes.

Using Vinegar and Baking Soda for Cleaning

When using vinegar and baking soda for cleaning, they can be used separately or in combination, depending on the task. Vinegar is effective at breaking down minerals and removing hard water stains, while baking soda is a gentle abrasive that dissolves organic compounds like dirt and grease.

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Contaminants and Substances in Vinegar and Baking Soda

In terms of contaminants or substances present in vinegar and baking soda, it’s essential to use food-grade or pharmaceutical-grade products for consumption or DIY projects. Commercially available baking soda may contain additives like tartaric acid and cornstarch, which should be avoided for certain applications. Similarly, vinegar can contain acetic acid and water, with some types containing additional ingredients like flavorings or colorings.

Balancing the pH

To balance the pH of a solution containing vinegar and baking soda, you can adjust the ratio of the two ingredients. Adding more baking soda will increase the pH, making the solution more basic, while adding more vinegar will decrease the pH, making it more acidic.


In summary, the pH of vinegar with sodium bicarbonate is approximately 7, making it neutral. This reaction can be used for various purposes, such as cleaning or educational experiments. When using vinegar and baking soda for DIY projects or consumption, it’s crucial to use food-grade or pharmaceutical-grade products and adjust the ratio of ingredients to achieve the desired pH level.

Chemistry Stack Exchange: What ratio of bicarb to vinegar do I need in order for the result to be pH neutral?
Easy Science Experiments: Baking Soda and Vinegar
Reddit: Baking Soda and Distilled Vinegar pH Levels
The Kitchn: What Happens When You Mix Baking Soda with Vinegar?
YouTube: The Science Behind Baking Soda and Vinegar
Live Science: Why Does Baking Soda and Vinegar Clean So Well?

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