The electronic spectra within UV-Vis region for chlorobenzene (C6H5Cl) and phenol (C6H5OH) and, have been studied. The bands, centered at 260nm and 240nm are assigned to electronic transitions π→π* type for C6H5Cl and C6H5OH respectively. However, an electronic transition of type n→σ* has been absorbed, at 265nm only for C6H5OH compound .The spectral shifts of these electronic bands were studied under various [pH] values. The vibrational bands of these two compounds have been studied by using Infrared and Raman scattering techniques. In the fact, these two compounds may be regarded as benzene C6H6 which belongs to D6h point group with one of the hydrogen atom is substituted by Cl- and OH- ions for C6H5Cl, and C6H5OH respectively .These substitutions will reduce the symmetry of point group to C2V, and hence will activate all the vibrational modes to be allowed in both infrared and Raman techniques. These aspects will be studied and discussed in this work.