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Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: Twickel on May 09, 2012, 09:15:06 AM

Title: Complex acid speciation diagrams, why do some species not have a fraction of 1?
Post by: Twickel on May 09, 2012, 09:15:06 AM

Hi
Just wondering, how come some species do not reach a fraction of 1, when the pkas are close?
Can someone explain this in more detail, the image can found in the attached file page 11 then 13.

Thank you in advance.

Title: Re: Complex acid speciation diagrams, why do some species not have a fraction of 1?
Post by: Borek on May 09, 2012, 10:39:58 AM

That's the way it is - before their fraction grows to 1 they are already consumed by a subsequent dissociation reaction.

Title: Re: Complex acid speciation diagrams, why do some species not have a fraction of 1?
Post by: Twickel on May 10, 2012, 09:07:52 AM

From the given data am I able to know the fraction value?