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Topic: How many of these can make a buffer?  (Read 1394 times)

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Offline kururu51116

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How many of these can make a buffer?
« on: April 23, 2014, 11:10:07 PM »
How many of the following can make a buffer?
NaOCH3 and HOCH3
H2SO4 and NaOH
H2S and NaF
NH4Cl in excess and NaOH
NH3 excess and HCl


The answer is 2.
I know the 1st one can make a buffer for sure... but can someone please explain to me how another one would work?
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Offline Xenonman

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Re: How many of these can make a buffer?
« Reply #1 on: April 24, 2014, 12:16:35 AM »
You should write each reaction that would happen, with the acid-base properties of each reactive and product.
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Offline Borek

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Re: How many of these can make a buffer?
« Reply #2 on: April 24, 2014, 03:02:04 AM »
First things first - what is a buffer? What does it contain?
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