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pottersheep

  • 3 years ago

Question about buffers? Buffer capacity

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  1. pottersheep
    • 3 years ago
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    Is buffer capacity the volume of acid/base you add, or the pH where it starts to change at?

  2. pottersheep
    • 3 years ago
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    Also, does the bufffer capacity have to be the same for acid and base? ie if the buffer capacity is 4 moles of HCl. wopuld it have to be 4 moles of naoh too?

  3. abb0t
    • 3 years ago
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    buffer capacity is the ability to withstand rapid pH fluctuation. The greater the buffering capacity, the greater the quantity of acid or base which must be incorporated with a material to alter the pH Conceptually, a buffer acts somewhat like a large sponge. As more acid is added, the ``sponge'' absorbs the acid without changing the pH much. The ``sponge's'' capacity is limited however; once the buffering capacity is used up, the pH changes more rapidly as acids are added.

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