Respuesta :

                            -5
[OH-]=2.24 X 10    M

Answer : The hydroxide ion concentration in a solution of ammonia is, [tex]2.2\times 10^{-5}M[/tex]

Explanation : Given,

pOH = 4.65

pOH : It is defined as the negative logarithm of hydroxide ion concentration.

Mathematically it is represented as :

[tex]pOH=-\log [OH^-][/tex]

[tex]4.65=-\log [OH^-][/tex]

[tex][OH^-]=2.2\times 10^{-5}M[/tex]

Therefore, the hydroxide ion concentration in a solution of ammonia is, [tex]2.2\times 10^{-5}M[/tex]