Question 1
Paper 2Medium6 marksChlorine reacts with propane when irradiated with ultraviolet (UV) light. Figure 1 shows the displayed structural formula of propane.
(a)[1]
Determine the number of different monochlorinated structural isomers that can form from propane.
(b)[2]
Write the equation for the initiation step, using single-barbed arrows to show the movement of electrons.
(c)
For the formation of 2-chloropropane:
(i)[1]
Write the first propagation equation, in which a hydrogen atom is transferred from propane to a chlorine radical.
(ii)[1]
Using the propan-2-yl radical, CH₃CH•CH₃, write the second propagation equation.
(d)[1]
Write one equation for a termination step in this chain reaction.