1
Q
Define Buffer
A
A solution that resists pH changes, even when acid or base is added to it.
2
Q
How are Buffers made?
A
Mixing a weak acid with a salt containing its conjugate base, or a weak base with a salt containing its conjugate acid
3
Q
Define Buffer Capacity
A
The amount of acid or base that can be added before considerable pH change occurs.
4
Q
How do Buffers resist pH change?
A
Adding acid/base causes a Le Chatelier shift due to the Common Ion Effect.
This brings the H3O+ or OH1- concentrations back to previous levels.
4U Chemistry Unit 4
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