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Topic: What should I use to adjust pH of Na2SO4 solution?  (Read 5640 times)

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Offline Questioneer

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What should I use to adjust pH of Na2SO4 solution?
« on: March 11, 2012, 09:56:09 PM »
I've prepared a 0.5M solution of Na2SO4.

I need it to be at pH 3.0 and don't know what acid to use.

My first reaction is to use H2SO4 - but I'm reluctant because my gut tells me the SO4 ions will mess with the desired concentration of Na2SO4.

Any suggestions on what to use?

Should I move this to the Biochem forum?


Thanks

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Offline Caustikola

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Re: What should I use to adjust pH of Na2SO4 solution?
« Reply #1 on: March 12, 2012, 04:08:02 AM »
How about adding HCl.


{MOD EDIT}

Renamed subject line back to original.
« Last Edit: March 12, 2012, 06:56:37 AM by Arkcon »
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Offline Borek

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Re: What should I use to adjust pH of Na2SO4 solution?
« Reply #2 on: March 12, 2012, 04:39:24 AM »
Use H2SO4, you will need below 10-3 M, thats 200 times less than 0.5M, I doubt your 0.5M solution concentrations is that accurate.
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Offline Questioneer

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Re: What should I use to adjust pH of Na2SO4 solution?
« Reply #3 on: March 13, 2012, 01:53:03 PM »
Thanks Borek!  I don't know where my head was >.<
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