[Melanoe]

Hi everyone,

The question is this: Accounting for the ionic strength of the solution determine the pH of a saturated solution of Au(OH)₃ that also contains 0.020 M potassium nitrate.

So far this is what I got:

Au(OH)₃ Au + 3OH         

KNO₃ K + NO₃

For the ionic strength I calculated it from KNO₃ and found it to be 0.02M. This is where I'm stuck, I don't know where to go from here. If anyone can, please help.


Thanks!

[AWK]

Hi everyone,

The question is this: Accounting for the ionic strength of the solution determine the pH of a saturated solution of Au(OH)₃ that also contains 0.020 M potassium nitrate.

So far this is what I got:

Au(OH)₃ Au + 3OH         

KNO₃ K + NO₃

For the ionic strength I calculated it from KNO₃ and found it to be 0.02M. This is where I'm stuck, I don't know where to go from here. If anyone can, please help.


Thanks!

Charges are missing
Now calculate activity coefficients of ions taken part in solubility equilibrium (Au³⁺ and OH^-)