Problem 37. The degree to which a chemical bond is ionic can be characterized by how nearly the bond can be treated as a

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Problem 37 The Degree To Which A Chemical Bond Is Ionic Can Be Characterized By How Nearly The Bond Can Be Treated As A 1 (40.97 KiB) Viewed 35 times

Problem 37. The degree to which a chemical bond is ionic can be characterized by how nearly the bond can be treated as a dipole with complete exchange of an electron between the molecules. The HF molecule is measured to have a dipole moment of 1.82 D, wherel D-1 Debye-3.336 x 10-30 C-m. The bond length of HF (effective separation of the atoms) is L=9.2 x 10-¹¹ m. A) What would be the dipole moment of HF (in Debye) if the bonding was "purely ionic" so that the charge of the F atom was -1.6 x 10-19 C and the charge of the H atom was +1.6 × 10-¹⁹ C. B) What is magnitude of the "effective charge" of the atoms in HF? Here the effective charge is the value of the charge used in the relation Pactual = geff L. Problem 38. Consider a single HF molecule that is centered on the origin of coordinates and that has its dipole moment aligned along the x-direction. A) What is the torque on the HF molecule if it in in an external electric field given by E=4 × 10³ N/Cz? B) What is the torque on the HF molecule if it in in an external electric field given by E=4 × 10³ N/Cg? C) What is the torque on the HF molecule if it in in an external electric field given by E=4 x 105 N/C+4 x 105 N/Cg?