[Ploting Eh-pH for Fe_Hg_H2O system]

Dear Brian,

Hope you are fine,

 

You mentioned in previous email that reaction (HgCO3(aq)+2 H2O = 2H+ + Hg(OH)2 +CO3-- )

 

which is valid at 25C, but I have found this data when I used Rxn.

 

HgCO3 (aq) + 2 H2O = 2 H+ + Hg(OH)2 + CO3--

 

Log K's:

0 °C: -18.2900 55 °C: -18.2900

12 °C: -18.2900 70 °C: -18.2900

25 °C: -18.2900 85 °C: -18.2900

40 °C: -18.2900 100 °C: -18.2900

 

Polynomial fit:

log K = -18.29 + 5.64e-14 × T - 2.788e-15 × T^2 + 4.38e-17 × T^3 - 2.149e-19 × T^4

 

Equilibrium equation:

log K = - log a[HgCO3 (aq)] + 2 × log a[H+] + log a[Hg(OH)2]

- 2 × log a[H2O] + log a[CO3--]

 

So, could you help me to add them to my pourbaix diagram which I have sent to you

 

Best regards,

 

Akram

[Ploting Eh-pH for Fe_Hg_H2O system]

Hi Brian,

 

Hope you are fine and enjoying the weather,

 

Yes,I am still interested in an Eh-pH diagram. Also, I would like to add FeCO3 and HgCO3. Also, is there any another program that I should use to get absorption reaction on the surface?

 

Best regards,

 

Akram

[Ploting Eh-pH for Fe_Hg_H2O system]

Hi Brian,

 

Hope you are fine!

 

I am hoping to consider Iron and mercuric ion in my diagram but I don't want oxygen on it. Yes, the oxidation of Fe is Fe++ and Hg is Hg++.

In addition, I have tried what you mentioned in previous email but I have problem about how to add entries to thermo data even if I read the Appendix that you have mentioned. Please, could you add it or help me to add it because I have hard time to add it.

 

 

I am looking forward to hearing from you,

 

Regards,

 

Akram

[Ploting Eh-pH for Fe_Hg_H2O system]

Hi

 

I would need to add Hg to the thermo data. So, How can I add this to the thermo?

 

Regards,

 

Akram

[Ploting Eh-pH for Fe_Hg_H2O system]

Hi

 

I have added Fe but i have hard time to get Fe-H2O-Hg system and I don't know how to get Hg in the diagram. So, I attached the code and the diagram in order to get help from you.

 

I am looking forward to hearing from you

 

Akram

 

Fe_CO2_MINERALS_SUPPRESSED.ac2

[Ploting Eh-pH for Fe_Hg_H2O system]

Hi

 

I tried what you told me but I don't get it. I am confuse about it and it is hard to get Fe in it. Also, I would like to get swap e- for CO2 OR H2O instead of O2(aq). So, could you help me with this ,please?

 

Regards

 

Akram

[Ploting Eh-pH for Fe_Hg_H2O system]

Hi

 

I wanted to edit my own thermo dataset to include Fe(0)but I don't know how to write in terms of the default Basis species - likely Fe++ and O2(aq). As you maintained in the last email.

 

Regards,

 

 

Akram

[Ploting Eh-pH for Fe_Hg_H2O system]

Sorry I would like to create redox-pH

[Ploting Eh-pH for Fe_Hg_H2O system]

Hello Farrell,

 

I would like to create a solubility diagram. Yes, I am referring to metallic iron, Fe(0)

 

 

Regards,

 

Akram

[Ploting Eh-pH for Fe_Hg_H2O system]

I tried to plot Fe_Hg_H2O system in Act2 but I don't get Fe. SO, I used Fe++ to plot it and I obtain the diagram wich doesn't have iron solid on it and it is sound strange. In addition, when I talked to my adviser,he told me should I get iron solid on it.Finally, I would like to ask about how I can get Fe in database in order to plot my diagram.

 

I am looking in advance to hearing from you.

 

Best regards,

 

Akram