How do salts play a role in a buffer?

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How do salts play a role in a buffer?

Postby Chem_Mod » Sun Aug 21, 2011 12:31 pm

Question: How do salts play a role in a buffer?

Chem_Mod
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Re: How do salts play a role in a buffer?

Postby Chem_Mod » Sun Aug 21, 2011 12:31 pm

Answer: Salts work well to buffer the pH of solution because you pick a specific salt wisely. In the generic equation HA --> H+ + A-, you pick your salt to contain the cation A-. Thus, in a solution of this salt and HA, due to the high relative concentrations of HA and A-, the solution is rather robust to change in pH.


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