Topic: pH pC diagrams - where do you find them? (Read 2611 times)

DTU student #12 · « **on:** November 30, 2016, 02:41:32 AM »

I have been searching for a while for a pH pC diagram for magnesium, in order to see at which pH values, what species is dominant, fx. I need to know when magnesium is no longer Mg²⁺ but MgOH⁺

However, I cant seem to find a diagram. I do know how to construct them, but I can't find the required pKa values either. All I can find are pH pC diagrams for iron.
Maybe I am just really bad at searching, or else perhaps such diagrams are rarely used?

Do any of you know where I should look for such diagrams? Or perhaps have one that are willing to share?

Best regards

Borek · « **Reply #1 on:** November 30, 2016, 02:59:13 AM »

Chances are you will find the equilibrium constant for the Mg²⁺+OH^- reaction under complexation, not Ka/Kb.

DTU student #12 · « **Reply #2 on:** November 30, 2016, 03:08:31 AM »

I am afraid I have already tried that, but with no result.

All that comes up are pH pC diagrams for iron, not magnesium

Best regards

AWK · « **Reply #3 on:** November 30, 2016, 04:13:38 AM »

Search once again: stability constant MgOH
... and be patient.

Topic: pH pC diagrams - where do you find them? (Read 2611 times)

DTU student #12

pH pC diagrams - where do you find them?

Borek

Re: pH pC diagrams - where do you find them?

DTU student #12

Re: pH pC diagrams - where do you find them?

AWK

Re: pH pC diagrams - where do you find them?

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