if propane is reacted w/ Cl2 in the presence of UV light what products form and in what percentages?

A) propyl chloride 100%
B) 42% propyl chloride and 58% isopropyl chloride
C) 75% propyl chloride and 25% isopropyl chloride
D) 90% propyl chloride and 10% isopropyl chloride

Question

if propane is reacted w/ Cl2 in the presence of UV light what products form and in what percentages?

A) propyl chloride 100%
B) 42% propyl chloride and 58% isopropyl chloride
C) 75% propyl chloride and 25% isopropyl chloride
D) 90% propyl chloride and 10% isopropyl chloride

Vocaloid · Answer

not allowed to use a calculator on my upcoming exam so was wondering the best way to reason this one out by hand Please do not comment unless you are actually familiar with the subject and are making a serious attempt at the problem.

imqwerty · Answer

Radical intermediates

Vocaloid · Answer

my first instinct was D b/c the propyl radical is more stable but apparently that's not it

imqwerty · Answer

the more the hyperconjugation the more the stability of your radical

imqwerty · Answer

|dw:1564199910099:dw|

stability order

imqwerty · Answer

the left one is more stable because it has more $\alpha$ hydrogens

Vocaloid · Answer

ah nvm I had propyl/isopropyl mixed up >>

thank you

imqwerty · Answer

the mechanisms involving radicals are fast and they don't allow the radicals to rearrange to their most stable position, they just react instantaneously

Vocaloid · Answer

good to know
thank you

imqwerty · Answer

np