Arrange each set of compounds in order of increasing boiling points:

In the following pairs of halogen compounds, which compound undergoes faster S_N1 reaction?

         and        

 

In the following pairs of halogen compounds, which compound undergoes faster S_N1 reaction?

27.

Write the IUPAC name of chloroform.

Write IUPAC name of iodoform.

Thionyl chloride is preferred in the preparation of chloro alkanes from alcohol. Give reason.