What is the correct ranking of the pKa values for the following ...

[bclement10]

What is the correct ranking of the pKa values for the following carbon acids?
 
  1.A < B < C
  2.A < C < B
  3.B < A < C
  4.B < C < A
  5.C < A < B

Question 2

How many  electrons are in imidazole?
 
  1.0
  2.2
  3.4
  4.6
  5.8

Question 3

Which of the following resonance structures is not aromatic?
 

Question 4

The heats of hydrogenation of cyclohexene, 1,3-cyclohexadiene, and benzene are 28, -55, and 49 kcal/mol, respectively.
 
   How much is benzene stabilized when compared to a hypothetical 1,3,5-cyclohexatriene?

  1.6 kcal/mol
  2.21 kcal/mol
  3.27 kcal/mol
  4.35 kcal/mol
  5.49 kcal/mol

[harveenkau8139]

Answer to Question 1

5

Answer to Question 2

4

Answer to Question 3

1

Answer to Question 4

4