Which of the Following Statements Are True? (I) the PK_a

Multiple Choice

Which of the following statements are true? (i) The pK_a of thiols is similar to that of phenols.
(ii) Little or no hydrogen bonding occurs among thiol molecules.
(iii) Thiols and disulfides are important in nucleic acid chemistry.

A) (i) and (ii) only
B) (i) and (iii) only
C) (ii) and (iii) only
D) (i) , (ii) , and (iii) only