What is the ph of a solution with [h3o+] = 7.5 x 10-9 m?

pH = 8.125

Explanation:

The pH of a solution can be defined as measure or the quantity of hydrogen ion that is present in a solution. The pH of a solution determines how acidic or basic a solution is.

In order to be able to determine the pH of a solution, the molar concentration of the Hydronium ion  [H3O+] in the solution must be known.

The pH is then calculated using the formula :

pH = - log [H3O+].

[H3O+] = 7.5 x 10⁻⁹ M

pH = - log[7.5 x 10⁻⁹M]

pH = 8.125

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.