pH < 7.0
Scurvey
The pH should be between 2.0 and 3.5 to be effective.
There are many vitamins. Each have it's own pH. For example pH of vitamin C is acidic. It means less than 7.
The question is unanswerable without knowing the concentration as well.
the pH level is 1.1
Apples have a pH level of 3. Also, soda has a pH level of 4, and vinegar's pH level is 2.5.
pH LEVEL OF 10
the pH level of listerine is 4.8
The pH level of an orange typically ranges from 3 to 4. This acidic pH level gives oranges their tangy taste.
The pH level of Coke is around 2.5, making it acidic.
The pH level of pure phosphoric acid is typically around 2.8.
The pH level of an apricot typically ranges from 3.3 to 4.2.