A pH study using a glass electrode at 303 K for complex formation between Al3+ ions and [acac]— (Table) in aqueous solution gives values of logKl, IogK2 and logK3 as 8.6, 7.9 and 5.8.

(a). To what equilibria do these values refer?

(b). Determine values for Δ G°I,(303 K), Δ G°2(303K) and Δ G°3(303 K) and comment on the relative ease with which successive ligand displacement reactions occur.

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a The charge of the AI 3 ion is 3 and the charge of the acetylacetonate acad ion is 1 Here aeac acts ... View the full answer