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Topic: controlling pH  (Read 2412 times)

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Offline txclayguy

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controlling pH
« on: January 22, 2010, 01:25:54 PM »
How can the pH of a solution of be raised significantly with minimal increase in the number of positive ions (such as Na, K, Li, etc.)? The solution contains MgCl.6H20, some NaOH, and either AlAcetate or AlCl.

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Offline Borek

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Re: controlling pH
« Reply #1 on: January 22, 2010, 01:48:51 PM »
Solution must be electroneutral, so if concentration of OH- goes up concentration of some counterions must go up as well.
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Offline Wreath

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Re: controlling pH
« Reply #2 on: January 23, 2010, 03:36:10 AM »
As Borek said, but I think there is a possibility - as I see AlCl3 (I suppose you missed the "3", because as far as I know AlCl exist only as gas, so it's not quite possible to put it in a solution) - I would read something about Lewis acids. But that's only the thing came up in my mind, I'm not saying it's correct.
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