Between two molecules of ethanol C2H5OH at room temperature and pressure, there are three types of intermolecular forces:1. Hydrogen bonding: This is the strongest intermolecular force present in ethanol. It occurs between the oxygen atom of one ethanol molecule and the hydrogen atom of another ethanol molecule that is covalently bonded to an oxygen or nitrogen atom.2. Dipole-dipole interactions: Ethanol is a polar molecule due to the electronegativity difference between oxygen and hydrogen atoms. This creates a dipole moment, leading to attractive forces between the positive end of one ethanol molecule and the negative end of another ethanol molecule.3. London dispersion forces: These are weak, temporary attractive forces that exist between all molecules, including nonpolar ones. They result from the temporary fluctuations in electron distribution around the molecules, which create temporary dipoles that attract other molecules.