Do buffers resist pH change? If so, why?

1 Answer
anor277
Aug 27, 2017

They do indeed resist gross changes in #pH#....up to the capacity of the buffer.

Explanation:

See this [old answer and links.](https://socratic.org/questions/how-do-you-predict-the-ph-of-a-buffer-solution-using-the-henderson-hasselbalch-e)

You have to know.....

#pH=pK_a+log_10{([A^-])/([HA])}#

What is the #pH# at half-equivalence, when #[A^-]=[HA]#?

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