- Books Name
- ACME SMART COACHING Chemistry Book
- Publication
- ACME SMART PUBLICATION
- Course
- CBSE Class 12
- Subject
- Chemistry
Carbon tetrachloride (pyrene)
Preparations & reactions :
- CCl4 is stable to heat and its vapours do not catch fire thus it is used as fire extinguisher.
- CCl4 used as medicine for elimination of hook worms.
Freons (Polychlorofluoro alkane)
Nomenclature of Freons :
Freon is expressed as
Freon - cba
Where
a – [Number of F-atoms]
b – [1 + Number of H–atoms]
c – [Number of C-atoms –1]
Example : C2Cl4F2 is expressed as Freon-112
a = 2 ; b = 1 + 0 ; c = 2 – 1
cba = 112
- Freon is odourless, non-corrosive, non-toxic gas. It can easily be liquefied hence widely used as refrigerant.