What is the hydrogen ion (H+) concentration of a solution of pH 8?

Answer:
10−8 M.
Explanation:
In this problem we are given pH and asked to solve for the hydrogen ion concentration. Using the equation, pH = − log [H+] , we can solve for [H+] as,
− pH = log [H+] ,
[H+] = 10−pH,
by exponentiating both sides with base 10 to "undo" the common logarithm. The hydrogen ion concentration of blood with pH 7.4 is,
[H+] = 10−7.4 ≈ 0.0000040 = 4.0 × In this problem we are given pH and asked to solve for the hydrogen ion concentration. Using the equation, pH = − log [H+] , we can solve for [H+] as,
− pH = log [H+] ,
[H+] = 10−pH,
by exponentiating both sides with base 10 to "undo" the common logarithm. The hydrogen ion concentration of blood with pH 7.4 is,
[H+] = 10−7.4 ≈ 0.0000040 = 4.0 × 10−8 M.
Answer:
[tex]\large \boxed{10^{-8}\text{ mol/L}}[/tex]
Explanation:
pH = -log[H⁺]
[tex]\text{[H$^{+}$]}= 10^{-\text{pH}} \text{ mol/L} = \mathbf{10^{-8}}\textbf{ mol/L}\\\text{The hydrogen ion concentration is $\large \boxed{\mathbf{10^{-8}}\textbf{ mol/L}}$}[/tex]