The second involves the enthalpy of vaporization of water, ∆𝐻 𝑣𝑎𝑝 , accounting for the reincorporation of the displaced water into the bulk. The magnitude of this correction is proportional to number of displaced waters, 𝑁 𝑤𝑎𝑡𝑒𝑟 , and modulated by two empirically fit constants, 𝛼 and 𝛽, which account for the fact that the water molecules in the surface are not isolated (𝛼) and remain partially solvated even when they are adsorbed ( 𝛽 ). 𝑁 𝑤𝑎𝑡𝑒𝑟 is estimated through 𝑁 𝑤𝑎𝑡𝑒𝑟 = 𝐴 𝑎𝑑𝑠𝑜𝑟𝑏𝑎𝑡𝑒 /𝐴 𝑤𝑎𝑡𝑒𝑟 , where 𝐴 𝑎𝑑𝑠𝑜𝑟𝑏𝑎𝑡𝑒 is the surface area of the adsorbate projected to the metal surface and 𝐴 𝑤𝑎𝑡𝑒𝑟 is the surface area of water molecule at the interface (see Supporting Information)