The pKa of acetic acid measured in water is $4\mathrm{.}7.$ The pKa of methanol

measured in water is $15\mathrm{.}5.$

Explain the difference in the pKa values of acetic acid and methanol.

Include in your answer:

$$ A definition of pKa.

$$ Relevant equations.

$$ A discussion of the factors that affect the stability of conjugate acids

and bases.