Given this situation, a more detailed study of the dissociation of CO 2 on Cu(110) is imperative to understand the dissociation dynamics better. In particular, dependence of the S 0 on E i needs to be understood at larger energies well beyond 2 eV, especially to check if any signs of a highly constrained reaction pathway are observed or not. In addition, examining the normal energy scaling, the effect of vibrational excitation of incident molecules, and understanding the surface temperature (T s ) dependence of the S 0 can also provide valuable information towards understanding the nature of the reaction pathway. In this work, we have studied the dissociation of CO 2 on Cu(110) surface across a wide range of E i , ranging from 0.28 eV to 4.6 eV. We have also investigated the effect of incident angle on the S 0 , to test the validity of normal energy scaling and looked into the effect of T s on the S 0 . To produce beams of CO 2 at high E i (> 1.7 eV) a heated nozzle was employed. This also allows us to understand the role of vibrational energy of the incident CO 2 molecules in the dissociation step.