Acidic,basic, and neutral aqueous solutions

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Neelem sheikh 1H
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Joined: Fri Sep 26, 2014 2:02 pm

Acidic,basic, and neutral aqueous solutions

Postby Neelem sheikh 1H » Wed Dec 10, 2014 10:14 pm

I was working on self test 11.12B and I don't understand why in part b, AlCl3 is acidic? I thought since Cl is the conjugate base of a strong acid, AlCl3 would be neutral

Regina Chi 2K
Posts: 51
Joined: Fri Sep 26, 2014 2:02 pm

Re: Acidic,basic, and neutral aqueous solutions

Postby Regina Chi 2K » Wed Dec 10, 2014 10:22 pm

Cl- doesn't really do anything because it won't pick up a proton. If you look at the chart in that section, all the small and highly, positively charged cations make it acidic. And also if you look at that chart, Cl- is a neutral anion.

RaquelAvalos1K
Posts: 35
Joined: Fri Sep 26, 2014 2:02 pm

Re: Acidic,basic, and neutral aqueous solutions

Postby RaquelAvalos1K » Thu Dec 11, 2014 3:27 pm

^ just as above, so, in this case the Al3+ is the ion acting as an acid; thus, making the solution acidic.

Other examples are in the course reader, such as: Fe3+, Cr3+, Fe2+, Cu2+, Ni2+ (and Mg2+ I believe)


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