Answers to Practice Exam 4

 

1. B; 2. B; 3. A; 4. A; 5. C; 6. B; 7. C; 8. C; 9. D; 10. C;

11. A) In carbon monoxide, C is triple bonded to O. In carbon dioxide, each O is double bonded to C, O=C=O.

B) The C-O bond length for CO is shorter than in CO2.  Triple bond are shorter than double bonds.

12.

 

13.

Substance                    

C2H6: London Dispersion;

Al2O3: Ionic

CH3OH: H Bonding

F2: London Dispersion

CH3F: Dipole-Dipole

14.

 

 

 

 

 

 

17. A) polar; B) polar; C) polar; D) nonpolar;

18. Dissolve 208.5 g of ethanol in 791 g of water.

19. 120 g;

20. 223 mm Hg;

21. 181 g/mol