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
