Why does acetone [(CH3)2C=O, dipole moment = 2.69 D] have a larger dipole moment than phosgene [Cl₂C=O, dipole moment = 1.17 D]? Note: electronegativities C = 2.5, Cl = 3.2, O = 3.5, H = 2.2 Select one: O A. In phosgene, the resultant of the C-Cl bond dipole moments is opposite to and partially cancels the C=O dipole moment. In acetone, the resultant of the C-H bond dipole moments (although small) adds to the C=O dipole moment. O B. Phosgene has a tetrahedral geometry while acetone possesses a trigonal geometry. OC. The C-H bond dipole moments of acetone are greater in magnitude than C-Cl bond dipole moments of phosgene. O D. In phosgene the C-Cl bond dipoles cancel out each other.

1. Consider the following acidic molecules. A OH D HO -OH O=C -OH Structure of dianion of C (HPO4²-) B HO O=A HO E POH OH P-O -P-OH OH OH с a. Draw the structure of dianions (i.e., after deprotonating the second most acidic proton) for molecules C and E. Make sure to indicate any formal charges on any atoms within each structure. Structure of dianion of E (H₂P₂O72²-)

a) which bond is present in alcohols but not alkanes? b) is this band strong or weak (in terms of spectra)? c) what is different about C=O and O-H bonds compared with C=C or C≡C bonds that show weaker signals?

compound HO at 6 and NO2 at 1

For the reaction given below, draw a mechanism (curved arrows) and then predict which side of the reaction is favoured under equilibrium conditions. Include lone pairs and formal charges.

ouro- 6)- Draw the structures for the least and most polar molecules (i.e.,isomers) of Bromo-chloro-fl iodoethene (C2BrCIFI). Briefly explain your choice. Structure of least polar: Structure of most polar:

Estimate the standard enthalpy change AH' for the reaction below: C2 H4 (9) + H2 (g) → C2 H6 (g) Data: Bond energies in kJ-mol1: H-H, 432; C-H, 415; C-C, 345; C=C, 615 -280 kJ -180 kJ -128 kJ +974 kJ -228 kJ

Please only type ans.

Using bond energies and the energy change of the reaction, calculate the bond energy of the CO double bond. Do not round your answer. C3H8 is propane C3H8 + 5O2 → 3CO2 + 4H2O . Bond Energy(kJ/mol) C-H 411 C-C 346 O=O 495 O-H 459 Reaction energy(kJ) -2047