Respuesta :

Edufirst
You just need to know that pH is the logarithm of the inverse of the concentration of hydrogen ion.

Mathematically this is: pH = log { 1/[H+] }

Then if you know the pH you can find [H+] using the properties of the logarithm function.

=> pH = - log [H+] => [H+] = 10^(-pH)

=> [H+] = 10 ^(-8.25) = 5.62 * 10^-9

Answer: the concentration of hydrogen ion, [H+], is 5.62 * 10^-9 M

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