Surface Enhanced Raman Scattering(SERS) from water molecules at silver surface in mixed solutions containing LiCl was studied for water mixed with ethanol, methanol and acetone. All LiCl-mixed solutions show an unusual peak at $3250cm^{-1}$ which is not observed in solution containing other cations. When $H_2O$ is replaced by $D_2O$, The SERS of $D_2O$ also shows the unusual peak at $2410cm^{-1}$ corresponding to the $3250cm^{-1}$ band in the case of $H_2O$. High hydration energy of $Li^+$ ion seems to result in this peak. However, if pyridine is added in this solution, the $3250cm^{-1}$ peak does not appear.
