Respuesta :
This is an incomplete question, here is a complete question.
What are the concentrations of hydrogen ion and hydroxide ion in household ammonia, an aqueous solution of NH₃ that has a pH of 11.00?
Answer : The concentrations of hydrogen ion and hydroxide ion in household ammonia is, [tex]1.00\times 10^{-11}M[/tex] and [tex]1.00\times 10^{-3}M[/tex]
Explanation :
As we know that the aqueous solution of ammonia is ammonium hydroxide that is, [tex]NH_4OH[/tex]
The equilibrium reaction will be:
[tex]NH_4OH\rightleftharpoons NH_4^++OH^-[/tex]
Given:
pH = 11.00
First we have to calculate the hydrogen ion concentration.
pH : It is defined as the negative logarithm of hydrogen ion concentration.
[tex]pH=-\log [H^+][/tex]
[tex]11.00=-\log [H^+][/tex]
[tex][H^+]=1.00\times 10^{-11}M[/tex]
Now we have to calculate the pOH.
[tex]pH+pOH=14\\\\pOH=14-pH\\\\pOH=14-11.00\\\\pOH=3.00[/tex]
Now we have to calculate the hydroxide ion concentration.
[tex]pOH=-\log [OH^-][/tex]
[tex]3.00=-\log [OH^-][/tex]
[tex][OH^-]=1.00\times 10^{-3}M[/tex]
Therefore, the concentrations of hydrogen ion and hydroxide ion in household ammonia is, [tex]1.00\times 10^{-11}M[/tex] and [tex]1.00\times 10^{-3}M[/tex]
