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Buffer Capacity

Posted: Sun Nov 29, 2015 2:41 pm
by Samantha Rundle 3K
If we are told to find the pH of a buffer and it is not equal to the pKa, does that mean the buffer is weak?

Thanks!

Re: Buffer Capacity

Posted: Sun Nov 29, 2015 3:02 pm
by Dulshan Jayasekera 3I
The pH doesn't always have to equal the pKa. When pH = pKa the buffer is at its optimum buffering capacity. However, the buffer remains effective if the pH is +/- 1 of the pKa