Answer:
4.26x10^-12M
Explanation:
The following were obtained from the question:
[H3O+] = 2.35x10^-3M
[OH-] =?
Recall: [H3O+] x [OH-] = 1 x10^-14
2.35x10^-3 x [OH-] = 1 x10^-14
Divide both side by 2.35x10^-3
[OH-] = 1 x10^-14/2.35x10^-3
[OH-] = 4.26x10^-12M
The concentration for hydroxyl ion or [OH-] is [tex]4.26*10^{-12}M[/tex].
Given:
[tex][H_3O^+][/tex] = [tex]2.35*10^{-3}M[/tex]
To find:
[OH-] =?
To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity).
The pH is then calculated using the expression: pH = - log [tex][H_3O^+][/tex].
[tex][H_3O^+] * [OH-] = 1 *10^{-14}\\\\2.35*10^{-3} * [OH-] = 1 *10^{-14}[/tex]
On dividing both sides by [tex]2.35*10^{-3}[/tex]
[tex][OH^-] = 1 *10^{-14}/2.35*10^{-3}\\\\OH^- = 4.26*10^{-12}M\\[/tex]
Find more information about pH here:
brainly.com/question/13557815
