After 50.0 mL of a 0.100 M solution of NaOH is added to 50.0 mL of a 0.100 M solution of an unknown acid, the equilibrium pH is basic. What may be concluded about the identity of the acid? a) The acid could be either a strong or weak acid, and could be either a monoprotic, diprotic, orpolyprotic acid.
b) The acid must be a weak acid, but could be either monoprotic, diprotic, or polyprotic.
c. The acid must be a strong acid, but could be either monoprotic, diprotic, or polyprotic.
d)The acid can only be a strong monoprotic acid.
e)The acid can only be a weak monoprotic acid.