860
CH3–Br
193
293
1 830
CH3–I
214
234
1 636
Table 6 2:
Carbon-Halogen (C—X) Bond Lengths, Bond
Enthalpies and Dipole Moments
      The preparation of alkyl chloride is carried out either by passing
dry hydrogen chloride gas through a solution of alcohol or by heating
a mixture of alcohol and concentrated aqueous halogen acid