This question is about organic compounds containing fluorine and chlorine.
The use of chlorofluorocarbons as refrigerants has ceased due to concerns about their effects on the ozone layer. One such compound is dichlorodifluoromethane.
Give the molecular formula of dichlorodifluoromethane.
Calculate the empirical formula of this compound.
(3)
(1)
(1)
Compounds containing carbon and fluorine but no chlorine can be used as refrigerants as they are not harmful to the ozone layer.
These can be made by the reaction of fluorine with alkanes or fluoroalkanes.
A refrigerant currently in use contains the compound trifluoromethane, CHF3.
Give the equations for the following steps in the mechanism for the reaction between fluorine and difluoromethane. Curly arrows are not required.
(3)
Initiation step
First propagation step
Second propagation step
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