The effect of applied potential on the electrochemical USR is studied to understand the potential dependence on the selectivity of urea. A solution of 0.1 M KNO3 and 0.1 M KHCO3 equilibrated with CO2 is chosen as the electrolyte, and the applied potential is varied from -0.6 to -1.5 V vs. RHE. Figure denotes the urea FE and urea current density as a function of the applied potential. As the applied potential is increased in the negative direction, the urea CD increases linearly. For all the applied potentials, the urea FE remains close to 100 %. This indicates that the Ag catalyst is very selective for the electrochemical USR for the electrolyte concentration of 0.1 M KNO3 and 0.1 M KHCO3. The selectivities of electrochemical CO2RR products such as CO, CH3OH, and C2H4 are potentially driven and the selectivities drop drastically when the applied potential is changed by even 0.2 V vs. RHE due to the competing HER. In our previous study on the electrochemical NiRR to NH3 on oxide-derived Co we observed that the selectivity towards NH3 is not potential driven and HER is completely suppressed. It has been reported in the literature that the HER is drastically suppressed even in the presence of small amounts of NOx. The presence of concentrated amounts of nitrates in our system suppresses the HER and hence the urea selectivity remains constant (~100%) in the studied potential range. At higher overpotentials (~-2 V vs. RHE), we observe only NH3 due to over oxidation of NO3 -.