Answer: The concentration of [tex]OH^-[/tex] ions in the solution is 0.0063 M
Explanation:
pH or pOH is the measure of acidity or alkalinity of a solution.
pOH is calculated by taking negative logarithm of hydroxide ion concentration.
[tex]pOH=-\log [OH^-][/tex]
[tex]pH+pOH=14[/tex]
[tex]11.8+pOH=14[/tex]
[tex]pOH=2.2[/tex]
Putting in the values:
[tex]2.2=-\log[OH^-][/tex]
[tex][OH^-]=[/tex] 0.0063 M
Thus the concentration of [tex]OH^-[/tex] ions in the solution is 0.0063 M