Weak Acid and Base Equilibria

AP Chemistry· difficulty 3/5

Which best explains the pH of the NaF solution?

A
$NaF is a strong base$
B
$F- is a strong acid$
C
$Na+ accepts H+ from water$
D
$F- is the conjugate base of HF and hydrolyzes water$
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Explanation

NaF is the salt of a strong base (NaOH) and weak acid (HF). The fluoride ion (a weak base) abstracts a proton from water, giving slightly basic pH > 7.

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