feyisaraomonike feyisaraomonike
  • 01-12-2019
  • Chemistry
contestada

find the POH of a solution of H3PO4 having a concentration of 0.05M​

Respuesta :

rahul96 rahul96
  • 06-12-2019

Answer:

The pOH of the solution is 13.176

Explanation:

The concentration of [tex]H_{3}PO_{4}[/tex] solution is 0.05 M

[tex]H_{3}PO_{4}[/tex] produces [tex]3\:H^{+}\:ions\:[/tex].

[tex]H_{3}PO_{4}\longrightarrow3H^{+}+PO_{4}^{3-}[/tex]

If the concentration of [tex]H_{3}PO_{4}[/tex] is 0.05 M, then the concentration of [tex]H^{+}\:ions\:[/tex] is three times that of [tex]H_{3}PO_{4}[/tex].

[tex][H^{+}]=3\times0.05=0.15M[/tex]

pH =-㏒([tex][H^{+}][/tex])= -㏒(0.15) =0.824

pOH = 14 - pH = 13.176

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