What are the uses of buffer solutions?

1 Answer
anor277
Jun 6, 2017

Buffers are used to keep the #pH# of solution tolerably close to a given value..........

Explanation:

See this old link.

And given the buffer equation.........

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

To keep #pH# around a certain value we choose an acid whose #pK_a# is close to the desired #pH#. Biological systems are extensively buffered.

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