Two very stable compounds, Freon-12 and Freon-14, are used as liquid refrigerants. A Freon-12 molecule consists of one carbon at
om, two chlorine atoms, and two fluorine atoms. A Freon-14 molecule consists of one carbon atom and four fluorine atoms. 81 In the space in your answer booklet, draw a structural formula for Freon-12. [1]
82 To which class of organic compounds do Freon-12 and Freon-14 belong? [1]
81. There is 1 carbon, 2 chlorine and fluorine atoms in Freon 12. To draw them it forms a cross with C in the middle and Cl and F both on the opposite side. Cl l F - C- F l Cl
82. Freon-12 and Freon-14 are called halocarbons or just halides.
The question asks average kinetic energy. So it is only related with the temperature. The higher temperature is, the higher kinetic energy is. So the answer is (4).
