Final answer:
Lemon juice is the most acidic with a pH of 2.2, milk is less acidic with a pH of 7.8, and bleach is the least acidic (alkaline) with a pH of 11.3.
Step-by-step explanation:
When considering the pH of each common substance and their relative acidity, we apply the concept that a lower pH value indicates higher acidity. Given the pH values of liquid ph milk (7.8), lemon juice (2.2), and bleach (11.3), we can determine their relative acidity.
1. Lemon juice, with a pH of 2.2, is the most acidic.
2. Milk, with a pH of 7.8, is less acidic than lemon juice but is still considered slightly basic or alkaline relative to a neutral pH of 7.
3. Bleach, with a pH of 11.3, is a basic substance and is the least acidic of the three. It is, in fact, alkaline.
The substances can be ranked from most acidic to least acidic as follows:
- Lemon juice (pH 2.2)
- Milk (pH 7.8)
- Bleach (pH 11.3)