Answer:
The conjugate acid of a Bronsted-Lowry base is the species formed when it accepts a proton (H+).
C7H5O2- is a base because it can accept a proton to form its conjugate acid. To find the conjugate acid of C7H5O2-, we add a proton to it. The proton will bond with one of the oxygen atoms, and the resulting species will be:
C7H5O2H
Therefore, the conjugate acid of C7H5O2- is C7H5O2H.