Question

Calculate the concentration of hydrogen ions in a healthy person’s blood that has a pH of 6.40.

Answer 1

[H⁺] = 3.98×10⁻⁷ M

Step-by-step explanation:

Given data:

pH of blood = 6.40

Hydrogen ion concentration = ?

Solution:

Formula:

pH = - log[H⁺]

by rearranging this formula,

[H⁺] = 10⁻(pH) or [H⁺] = antilog (-pH)

By putting values,

[H⁺] = 10 ⁻⁶°⁴⁰

[H⁺] = 3.98×10⁻⁷ M