A graduate student wanted to use yeast to make radioactive C14 labeled ethanol. He mixed yeast extract with C14 labeled glucose and ethanol was produced from the added glucose. However, he was very disappointed that the ethanol was not labeled. He thought about the experiments and realized that he made a mistake. What could be his mistake

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.