CHM 1025C Exam #4 Module Four II Sample Exam

Module Four II- Part O: Polarity of Molecules 10 points

Use the dot/stick structures and sketch the molecule in three dimensions. Then draw the dipoles for each bond to state if the molecule is polar or nonpolar:

Electronegativities: F=4.0; O=3.5; N=3.0; Cl=3.0; Br=2.7; C=2.5; S=2.5; P=2.1; H=2.1

_____________1. H2O _____________2. CO2 _____________3. C2H4 _____________4. C2H2 _____________5. SO2 _____________6. SO3 _____________7. CH4 _____________8. NH3 _____________9. BH3 _____________10. HCN _____________Bonus. PCl5 _____________Bonus SCl6