For the strong acid solution 0.0058 m hclo4, determine [h3o+] and [oh-].

Q1) pH scale can be used to determine how acidic or basic a solution is.

Strong acids completely dissociate into hydronium ions, therefore the concentration of the acid is equal to the concentration of hydronium ions.

[HClO4] = [H3O+]

[H3O+] = 0.0058 M

Q2) pH can be calculated as follows,

pH = - log [H3O+]

pH = - log (0.0058)

pH = 2.24

By knowing the pH the pOH value can be found out

pH + pOH = 14

pOH = 14 - 2.24 = 11.76

Knowing the pOH the hydroxide ion concentration can be calculated

pOH = - log[OH-]

[OH-] = antilog (-pOH)

[OH-] = 1.74 x 10^ (-12)

Hydroxide ion concentration is = 1.74 x 10^ (-12) M