Respuesta :
The substance which has H⁺ concentration but is still considered an acid is milk.
How concentration of H⁺ determine acidity?
Acidity of any substance will be calculated by using the pH scale and pH is define as:
pH = -log[H⁺]
Among the given substances pH of them are in range of:
- Milk: pH = 6.5 - 6.7
- Blood: pH = 7.35 = 7.40
- Gastric fluid: pH = 1.5 - 3.5
- Household lye: pH = 13.5
pH scale ranges from 0 to 14, where 0 to 6.9 shows the acidity, 7 shows the neutrality and from 7.1 to 14 shows the basicity of the solution. From the given pH values it is clear that lye is highly basic and gastric fluid is highly acidic. And blood has slight basic nature and due to the presence of lactic acid milk has very low concentration of H⁺ ions and considered as acid.
Hence milk is the correct answer.
To know more about acidity, visit the below link:
https://brainly.com/question/19584961
