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Topic: Neutralizing AgNO3  (Read 5525 times)

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Offline Amoona

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Neutralizing AgNO3
« on: March 16, 2011, 07:34:33 AM »
Hello Everyone,

First of all, I am very happy to have found this forum.

Ok, here is my predicament...

I need to prove that the AgNO3 is being neutrilized by a buffer containing Acetic Acid and Sodium Acetate, but I am having a hard time coming up with anything.

Any guidance would be appreciated!

Thanks again!
Amoona

Offline Borek

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Re: Neutralizing AgNO3
« Reply #1 on: March 16, 2011, 08:01:33 AM »
Please elaborate what you are trying to do. What is initial pH of the silver nitrate? Why?
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Offline Amoona

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Re: Neutralizing AgNO3
« Reply #2 on: March 16, 2011, 01:34:51 PM »
Hello again,

I am sorry I forgot to mention that AgNO3 has a normality of 0.1 and a pH of 9.0.

We use silver nitrate in salt analysis. Along with the salt sample (usually a meat product), we add water and a buffer. We titrate this with AgNO3. Once the titration has reached the end point we are left with waste.
I believe that purpose of the buffer is to neutralize AgNO3 so that it may go down the sink, but I am having a hard time coming up with any explanation.

I hope this is clear enough, please do not hesitate to ask me if you have any more questions.
 Thanks again!

Offline Borek

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Re: Neutralizing AgNO3
« Reply #3 on: March 16, 2011, 05:13:39 PM »
Buffer is usually added to keep pH at some predefined level.

What do you mean by "neutralize"? Are you sure you don't mix neutralize as in acid/base reaction with neutralize as in making something not harmful?
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