* Lemon juice: pH 2.0 to 2.4
* Orange juice: pH 3.3 to 4.0
* Tomato juice: pH 4.0 to 4.4
* Apple cider: pH 3.5 to 4.0
* Carbonated drinks (cola, soda): pH 2.0 to 3.0
It's important to note that the exact pH of these substances can vary depending on the brand, concentration, and other factors.