Phenol, C6H5OH is a weak organic acid:?

Moles phenol = 0.417 / 94 = 0.00444
Initial concentration = 0.00444 / 0.210 L = 0.0211 M
C6H5OH + H2O <----> C6H5O- + H3O+
initial concentration
0.0211
change
- x . . . . . . . . . . . .. . . . . . .+x . . . . . . .. +x
at equilibrium
0.0211- x . . . . .. . . . . . . . . .x. . . . . . . . . .x
1.3 x 10^-10 = x^2 / 0.0211-x
x = 1.66 x 10^-6 M = [H3O+]
pH = - log 1.66 x 10^-6 = 5.78
pOH = 14- pH = 8.22

C6h5oh H2o

phenol is an organic compound with hydroxyl group connected to a benzene ring. Phenol has anesthetic properties, and is the active ingredient in some oral anesthetics such as Chloraseptic spray. It is also used in the production of drugs (it is the starting material in the industrial production of aspirin), weedkillers, and explosives. During WWI, the American subsidiary of the Bayer Company bought as much phenol as it could from the international market, knowing that eventually all the phenol could be convered into aspirin. This left little phenol available for the synthesis of 2,4,6-trinitrophenol (TNT), a common explosive.