The halogenation of methane in the gas phase is an industrial method for the preparation of certain
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The halogenation of methane in the gas phase is an industrial method for the preparation of certain alkyl halides and takes place by the following equation (X = halogen):
(a) This reaction takes place readily when X = Br or X = Cl, but not when X =
i. Show that these observations are expected from the ΔH° values of the reactions. Calculate the ΔH° values from appropriate bond dissociation energies.
(b) Explain why samples of methyl iodide (H3C—I) that are contaminated with traces of HI darken with the color of iodine on standing a long time.
Transcribed Image Text:
X₂ + CH4 H₂C-X + H-X
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a In the general reaction the CH bond of methane and the XX bond of the halog...View the full answer
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