* Black Coffee: The pH of coffee can range from 4.5 to 6.5, depending on the roast and brewing method.
* Apple Juice: Typically has a pH between 3.5 and 4.5, but can vary depending on the variety of apple.
* Wine: Wine pH can range from 3 to 4, but some wines may fall into the 5-6 range, especially if they are sweeter.
* Milk: Milk has a pH of around 6.5, although it can fluctuate slightly.
* Rainwater: Clean rainwater is naturally slightly acidic with a pH around 5.6, due to dissolved carbon dioxide.
Note: This is not an exhaustive list, and the exact pH of a liquid can vary depending on factors like the specific ingredients used, processing methods, and storage conditions.
