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Topic: Acid-Base Properties of Salts  (Read 4700 times)

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cluckcluckchuck

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Acid-Base Properties of Salts
« on: March 28, 2005, 02:13:01 PM »
I am having trouble solving this problem.

Sodium azide (NaN3) is sometimes added to water to kill bacteria.  Calculate the concentration of all species in a 0.010 M solution of NaN3.  The Ka value for hydrazoic acid (HN3) is 1.9 * 10-5.

Offline Borek

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Re:Acid-Base Properties of Salts
« Reply #1 on: March 28, 2005, 05:23:50 PM »
If you have calculated pH of NaCN solution you should have no problems with this one :)

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Offline AWK

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Re:Acid-Base Properties of Salts
« Reply #2 on: March 29, 2005, 01:36:37 AM »
NaCN is an another goals of wool. We are talking on sodium azide. Na+ and N3- can be allmost the same as NaN3, and HN3 can be calcualted from hydrolysis and approximately can be as low as 1% of salt concentration.
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Re:Acid-Base Properties of Salts
« Reply #3 on: March 29, 2005, 04:04:50 AM »
I was referring to cluckcluckchuck "Another Acid-Base Properties of Salts Problem" post - in both cases calculations are identical (hydrolysis of weak acid salt), just the final pH is different.
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