synthesis and ozone

• what is a primary halogenoalkane?

  carbon bonded to halogen is bonded to one other carbon
• what is a secondary halogenoalkane?

  carbon bonded to halogen is bonded to two other carbons
• what is a tertiary halogenoalkane?

  carbon bonded to halogen is bonded to three other carbons
• where is ozone found?

  found in upper atmosphere and ground level

  an irritant with distinctive smell
• how is ozone in upper atmosphere formed?

  formed naturally and beneficial

  protects earth from UV radiation
• what is ozone destroyed by?

  Chlorine radical, which derive from CFCs
• what are CFCs used for?

  aerosols

  fridges

  solvents
• what is the initiation process of ozone being destroyed?

  CF3Cl --> .CF3 + Cl.
• what is the propagation processes of ozone being destroyed?

  Cl. + O3 --> ClO. + O2

  ClO. + O3 --> 2O2 + Cl.
• what is the overall equation of ozone being destroyed?

  2O3 --> 3O2
• what is the catalyst in the process of ozone being destroyed?

  Cl.

  it is used and regenerated
• what is the test for halogenoalkanes?

  1. add acidified silver nitrate
  2. positive result:

  Cl- - white

  Br- - cream

  I- - yellow