Section 408?
Anyway, with pKa in mind, I'm guessing then an acid-base reaction...
ClCH2COOH + Ph-O-Na+ (essentially) ---->
ClCH2COO-Na+ + Ph-OH
Since, chloroacetic acid is the stronger acid, and phenolate is the stronger base they're favored to react and produce chloroacetate and phenol? Is that where you were going? Or am I completely off track?