trentkuechenmeister trentkuechenmeister
  • 07-12-2020
  • Chemistry
contestada

assuming complete dissociation, what is the pH of a 0.606 M Ba(OH)2 solution? round to 3 significant figures​

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sebassandin
sebassandin sebassandin
  • 12-12-2020

Answer:

pH = 14.05.

Explanation:

Hello!

In this case, since barium hydroxide ionizes according to the following equation:

[tex]Ba(OH)\rightarrow Ba^{2+}+2OH^-[/tex]

We can compute the concentration of hydroxyl ions based on:

[tex][OH^-]=0.606\frac{molBa(OH)_2}{L}*\frac{2molOH^-}{1molBa(OH)_2} =1.21M[/tex]

Next we compute the pOH:

[tex]pOH=-log([OH^-])=-log(1.12)=-0.0500[/tex]

Thus the pH is:

[tex]pH=14-pOH=14+0.05\\\\pH=14.05[/tex]

Which means it is very concentrated basic solution.

Best regards!

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