Of the bonds, C-N, C=N, and C = N, the C-N bond is O a. intermediate in both strength and length Ob. strongest/longest O C. strongest/shortest O d. weakest/shortest e. weakest/longest

Three molecules of methanol (CH3OH) are shown below. Which of the labeled interactions are nydrogen bonding interactions? H. II H. III -C H H C IV O Il and II O IV only O Il and IV O IIl only O None of them. OIonly Ol only OUJI, and IV וווווu

D. Calculate the enthalpy of dissociation (or bond energy) of the X-X bond. Treat multiplication as consecutive addition for the purpose of sig. figs. Reaction AH value Reaction/Process Enthalpy of sublimation of M i. AHsub = 137 kJ/mol First ionization energy of M i. AHIE1 = 765 kJ/mol -> AHIE2 = 1221 kJ/mol Second ionization iii. energy of M AHIE3 = 7453 kJ/mol Third ionization iv. energy of M Enthalpy of dissociation of X2 (g) AHD = ?? V. AHEA1 = -366 kJ/mol First electron affinity of X %3! vi. AHlattice = -5230. kJ/mol vii. Lattice energy of MX3 Enthalpy of formation vii. M (s) + X2 (g) MX3 (s) AH: = 3882 kJ/mol of MX3

Consider the bond lengths and bond strengths of the three bonds labeled. H A B C Which statement is true? The shortest bond is C and the strongest bond is C. The shortest bond is A and the strongest bond is A. The shortest bond is B and the strongest bond is B. The shortest bond is B and the strongest bond is A.