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Which one of these salts makes a chemical reaction with vinegar?

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Borek:

--- Quote ---
--- Quote ---Can you think of any reaction with acetic acid in which any of the ions present in the two other solutions could take place?

--- End quote ---

Yes!

CH3COOH + NH4+NO3- ---> CH3COO(NH4)+ + HNO3

And

CH3COOH + Na+NO3- ---> CH3COO(Na)+ + HNO3

--- End quote ---

Write them in ionic form, cancel out spectators.

INeedSerotonin:

--- Quote from: Borek on July 16, 2019, 09:32:14 AM ---
--- Quote ---
--- Quote ---Can you think of any reaction with acetic acid in which any of the ions present in the two other solutions could take place?

--- End quote ---

Yes!

CH3COOH + NH4+NO3- ---> CH3COO(NH4)+ + HNO3

And

CH3COOH + Na+NO3- ---> CH3COO(Na)+ + HNO3

--- End quote ---

Write them in ionic form, cancel out spectators.

--- End quote ---

They all have cancelled each other! Is there a name to this phenomenon? Does this mean that no HNO3 is actually formed?

Borek:

--- Quote from: INeedSerotonin on July 16, 2019, 09:57:35 AM ---They all have cancelled each other! Is there a name to this phenomenon?
--- End quote ---

Yes, it is called "no reaction" ;)


--- Quote ---Does this mean that no HNO3 is actually formed?
--- End quote ---

This is a bit more complicated.

Please note that to some extent every solution containing both H+ and NO3- is a solution of the nitric acid. If you prepare 1M solution of HNO3 there is no doubt this is a nitric acid solution. Now add 1 M NaCl. Would you agree it is still a nitric acid solution, just with some NaCl added? Now prepare 1 M solution of HCl and add 1 M NaNO3. Can you distinguish it from the previous solution? Is it a hydrochloric acid solution with NaNO3 added, or a nitric acid solution with NaCl added?

Or perhaps it actually doesn't matter how we call it as long as we just list all the ions present?

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