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Write a chemical reaction useful to prepare the following: 

1. Freon- 12 from carbon tetrachioride. 

2. Carbon tetrachioride from carbon disulphide.

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1. Freon-12 from carbon tetrachioride: 

Freon- 12 is prepared by the action of hydrogen fluoride on carbon tetrachioride in the presence of catalytic amount of antimony pentachloride. This is called “swartz reaction”.

2. Carbon tetrachioride from carbon disuiphide: 

Carbon disuiphide reacts with chlorine gas in the presence ofanhydrous AlCl3 as catalyst to give carbon tetrachloridc.

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