# Experimental Buffer Capacity Calculation

by chem.is.try
Tags: buffer, calculation, capacity, experimental
 P: 2 I know that buffer capacity is defined as the ability of a buffer to resist pH change. I'm trying to calculate the buffer capacity of my buffer. I added NaOH to it until a significant change in pH, usually about 2 units. So when I calculate, should I do exp. buffer capacity = (moles NaOH / $$\Delta$$ pH )/ volume of buffer used i'm basing this formula on this website: http://www.chemicalforums.com/index.php?topic=20361.0 also, if you could give a clearer definition of buffer capacity in terms of experiments and how it should be calculated, that would be great. right now, i'm looking at it as the amount of base needed to change the pH of 1 L of the buffer by 1 unit. Thanks!