When comparing the physical and chemical properties of ordinary water () and heavy water (), which o — Hydrogen Chemistry Question

💡 Solution & Explanation

Due to higher molecular mass, $D_2O$ has higher boiling/melting points and vaporization enthalpy. $H_2O$ has a higher dielectric constant, making it a better ionic solvent. Reactions involving $O-D$ cleavage are *slower*, not faster, than $O-H$ cleavage because the $O-D$ bond dissociation energy is higher. Heavy water is a standard moderator.