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Is $\ce{Al(OH)3}$ in a very dilute solution deemed as a strong base? Are there any actual experimental data for it?

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    $\begingroup$ $\ce{Al(OH)3}$ is all but insoluble in water (though you may call that "a very dilute solution", if you like), and most certainly is not a strong base. $\endgroup$ – Ivan Neretin Nov 18 '15 at 7:38
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No, it is not a strong base.

It is a weak acid with pKa of 5

See DISSOCIATION CONSTANTS OF INORGANIC ACIDS AND BASES IN AQUEOUS SOLUTION at the page numbered 143 (page 12 of the file).

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