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Topic: Concentration of ions  (Read 3131 times)

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Offline Krasmi

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Concentration of ions
« on: April 13, 2007, 12:26:36 PM »
If we have 1M of sulphuric acid solution, there would be 1M of SO42- ions and 2M of H+ ions.  Is that correct?
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Offline Dan

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Re: Concentration of ions
« Reply #1 on: April 13, 2007, 01:26:44 PM »
If dissociation was complete, then that would be correct. However, the second dissociation constant of sulfuric acid is five orders of magnitude lower than the first (pKa1 ~ -3, pKa2 ~ 2).

In other words, the

H+ + HSO4- <----> 2H+ + SO42-

equilibrium lies further to the left.
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Offline Krasmi

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Re: Concentration of ions
« Reply #2 on: April 13, 2007, 01:53:07 PM »
Thank you.
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