Concept explainers
Interpretation:
Consider the buffer system HF, and its salt, NaF
a. The purpose of buffer system is to
1. Maintain [HF]
2. Maintain [F-]
3. Maintain pH
(b)The salt of the weak acid is needed to
1. Provide the conjugate base
2. Neutralize added H3O+
3. Provide the conjugate acid
(c)If OH- is added, it is neutralized by
1. The salt
2. H2O
3. H3O+
d. When H3O+ is added, the equilibrium shift in direction of the:
1. Reactants
2. Products
3. Does not change
Concept introduction:
A buffer system is a solution that resists change in pH when acids or bases added to it.
Buffer systems are made of either a weak acid and its salt or a weak base and its salt.
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