Answer:
The concentration of hydrogen ions in moles per liter (M) is [tex]3.981 * 10^{-9}[/tex]
Step-by-step explanation:
As we know
The hydrogen ion concentration of any solution at pH is given by
[tex]H^+ = 10^{-pH}[/tex]
Substituting the given values in above equation, we get -
[tex]H^+ = 10^{-8.4}\\H^+ = 3.981 * 10^{-9}[/tex] mol/l
The concentration of hydrogen ions in moles per liter (M) is [tex]3.981 * 10^{-9}[/tex]
