Buffer Capacity

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Samantha Rundle 3K
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Buffer Capacity

Postby Samantha Rundle 3K » Sun Nov 29, 2015 2:41 pm

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!

Dulshan Jayasekera 3I
Posts: 20
Joined: Fri Sep 25, 2015 3:00 am

Re: Buffer Capacity

Postby Dulshan Jayasekera 3I » Sun Nov 29, 2015 3:02 pm

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


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