Answer:
The hydroxide ion concentration is 0.003981 M.
The hydronium ion concentration is[tex] 2.5119\times 10^{-12} M[/tex].
Explanation:
The pOH of an aqueous solution at 25°C = 2.40
[tex]pOH=-\log[OH^-][/tex]
[tex]2.40=-\log[OH^-][/tex]
[tex][OH^-]=0.003981 M[/tex]
The hydroxide ion concentration is 0.003981 M.
The pH of an aqueous solution at 25°C = ?
The relationship between pH and pOH :
pH + pOH = 14
[tex]pH=14- pOh = 14-2.40 =11.6 [/tex]
[tex]pH=-\log[H_3O^+][/tex]
[tex]11.6=-\log[H_3O^+][/tex]
[tex][H_3O+]=2.5119\times 10^{-12} M[/tex]
The hydronium ion concentration is[tex] 2.5119\times 10^{-12} M[/tex].
