Answer
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Work Step by Step
There is a relationship between the strength of an acid (or base) and the strength of its conjugate base (or conjugate acid):
$1$ The stronger the acid, the weaker its conjugate base.
$2$ The weaker the acid, the stronger its conjugate base.
$3$ The stronger the base, the weaker its conjugate acid.
$4$ The weaker the base, the stronger its conjugate acid.