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Topic: Substituting NaHCO3 for K2CO3  (Read 6629 times)

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Offline peter

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Substituting NaHCO3 for K2CO3
« on: March 30, 2007, 10:02:15 PM »
Hello, when substituting sodium bicarbonate for potassium carbonate in a reaction, do you use 2 moles of sodium bicarbonate for every mole of the potassium carbonate?

Thanks in advance
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Offline peter

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Re: Substituting NaHCO3 for K2CO3
« Reply #1 on: March 30, 2007, 10:09:32 PM »
I forgot to mention that the K2CO3 is there for pH control only.
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Offline Yggdrasil

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Re: Substituting NaHCO3 for K2CO3
« Reply #2 on: April 01, 2007, 09:03:07 PM »
If you substitute sodium bicarbonate for potassium carbonate, your solution will be buffered at a completely different pH because bicarbonate has a different pKa than carbonate.
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