1 Which of the labeled hydrogen atoms in the following structure is the most acidic?  0 II 011201i2COH 3 4 5  O1 O2 O3 O4 O5  2

1 Which of the labeled hydrogen atoms in the following structure is the most acidic? 

0 II 011201i2COH 3 4 5 
O1 O2 O3 O4 O5 
2.What is the major organic product of the following ardor addition? 
OH ? 
I. 
II. 
0 JOH)L 0 IV. OH IH cr. 0 1H OH 
OH 0 
OH dH 0 C—)H 
III IV V 

3.

Which of the labeled hydrogen atoms in the following structure is the most acidic? 

0 II C—CH2CH2CH3 3 4 5 
2 
O 1 O2 O3 O4 O5 
4. Which of the following compounds does not have an alpha hydrogen? 
Which of the following compounds does not have an alpha hydrogen? 
I. 
O 

0 II H—C—H 
Iv. 
=r) 
CH3 CH3-8H CH3 
O II