Question

What is the H+ concentration for milk ?

Answer 1

The hydrogen ion concentration of milk is about 1.6 × 10-7 moles per liter. Find the pH.

Chemistry: PH of Liquids. In chemistry, the of a liquid is defined as

pH = -log [H+],

where is the hydrogen ion concentration [H+] in moles per liter.

a) The hydrogen ion concentration of human blood is normally about 3.98 × 10−8 moles per liter. Find the pH.

b) The pH of seawater is about 8.3. Find the hydrogen ion concentration.

a) To find the of human blood, we use the above formula:

pH = -log [H+] = -log

≈ –(−7.400117)

≈ 7.4.

The pH of human blood is normally about 7.4.

b) We substitute and solve for [H+]:

8.3 = -log [H+]

−8.3 = log [H+]

10-8.3 = [H+]

5.01 × 10−9 ≈ [H+].

The hydrogen ion concentration of seawater is about 5.01 × 10−9 moles per liter.