11. Metal ions in aqueous solutions are solvated, or hydrated by water molecules
ID: 908659 • Letter: 1
Question
11. Metal ions in aqueous solutions are solvated, or hydrated by water molecules. Typically this primary hydration sphere is composed of six water molecules. The hydrated metal ion acts as a weak acid, undergoing a stepwise hydrolysis in which it donates an H ion from its water ligands to the surrounding free water molecules. Shown below is the hydrolysis of Al(H2O)63 (pKa = 4.85) in water
Calculate the pH of a 0.00147 M AlCl3 solution and determine what fraction of the aluminum is in the form Al(H2O)5OH2 .
Explanation / Answer
11. Metal ions in aqueous solutions are solvated, or hydrated by water molecules
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