Does baking change the pH value of soda?

Yes, baking does change the pH value of soda. Here's why:

* Baking soda (sodium bicarbonate) is a base. It has a pH of around 8.3, making it alkaline.

* Baking involves heat. Heat breaks down the chemical structure of sodium bicarbonate. This process releases carbon dioxide gas (CO2) and leaves behind sodium carbonate.

* Sodium carbonate is also basic, but less so than baking soda. Its pH is around 11.

The overall effect is that baking soda becomes slightly less alkaline (its pH decreases) as it transforms into sodium carbonate. However, the change is relatively small and might not be noticeable in the final product.

Important to note: This change in pH doesn't necessarily affect the flavor of baked goods. The baking soda's primary role is as a leavening agent, which means it helps the product rise. The small change in pH is not usually significant in terms of taste.