Travel Index and Doc Brown's Chemistry : Brief GCSE A Level AS A2 Advanced Level CHEMISTRY NOTES
H2SO4 and Na+Cl- etc. etc. !
[M(H2O)6]3+(aq) + 3OH-(aq) <=> [M(H2O)3(OH)3]0(aq) + 3H2O(l)
Some of the M3+ hydroxides are amphoteric and dissolve in excess alkali (1.) or acid (2.)
e.g. to eventually form for chromium(III) or aluminium, 1. the soluble hexa-hydroxo complex ion or 2. the original hexa-aqua ion.
[M(H2O)3(OH)3]0(aq) + 3OH-(aq) <=> [M(OH)6]3-(aq)+ 3H2O(l)
[M(H2O)3(OH)3]0(aq) + 3H3O+(aq) <=> [M(H2O)6]3+(aq) + 3H2O(l)
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