6D.15 part b 7th

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6D.15 part b 7th

Postby Jordan_Wesson_2J » Thu Jan 24, 2019 9:39 pm

Where does Al(H2O)6 come from in the solutions manual? The initial molecule is AlCl3.

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Re: 6D.15 part b 7th

Postby Sean_Rodriguez_1J » Fri Jan 25, 2019 7:53 pm

In water, AlCl3 ionizes to form Al3+ and Cl- ions. The Cl- ions do not affect the pH, but in aqueous solution, water molecules surround the highly positively charged Al3+ and form coordinate covalent bonds with the Al atom. This is written as Al(H2O)6 3+, which is the behavior of the Al3+ ion in aqueous solution. It's something you have to remember when dealing with salt solutions.

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