Sciencemadness Discussion Board

halogeno alkanes--help

betty - 7-2-2004 at 07:15

can someone tell me why Sn 1 is faster than Sn 2 when hydolysing?

vulture - 7-2-2004 at 08:11

Please provide more information.

Is this a homework question?

Sn1 faster than Sn2-why?

betty - 7-2-2004 at 08:55

It's my Salters chemistry A level coursework--I'm stuck on the actual 'reason' why the hydrolysis of halogeno alkanes is quicker using the Sn1 reaction rather than the Sn2--thanks for replying

vulture

betty - 8-2-2004 at 22:17

please can anyone advise--i've spent literally hours looking for this snippet of info to no avail--please help me if you can

t_Pyro - 9-2-2004 at 05:25

Rate of reaction via Sn1 or Sn2 depends on whether the halogen derivative is a primary, or secondary, or tertiary halogen derivative.
Sn1 rate increases from primary to tertiary since the intermediate carbocation is more stable.
Sn2 rate decreases from primary to tertiary due to steric hindrance.

I think a good book on Organic Chemistry like the one by Morrison & Boyd should be able to answer all such basic (pun intended) questions.

t-Pyro

betty - 10-2-2004 at 01:36

thanks for your help--I'm really grateful