Explain how it is possible for CCl4 to have polar bonds but be a ...

[erika]

Explain how it is possible for CCl4 to have polar bonds but be a non-polar molecule. A diagram may be helpful in your answer, but it must be explained.
 
  What will be an ideal response?

Question 2

Which choice represents the carbon skeleton of 2,5-octadiene?
 
  A) C=C=C-C-C-C-C-C
  B) C-C=C-C-C=C-C-C
  C) C=C-C-C=C-C=C-C
  D) C-C=C-C-C-C-C=C
  E) C-C=C-C=C-C-C-C

[dreamfighter72]

Answer to Question 1

(This question could also be asked about CF4 or CO2.)
The bonds in this compound are polar due to the difference in their electronegativity values. However, the molecule is not polar because the molecule is symmetrical, which means that the polar forces in different directions balance each other out. In this case, the overall distribution of electrons in the molecule is even.

Answer to Question 2

B

[erika]

Wow, this really help

[amandalm]

Gracias!