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Author: Subject: halogeno alkanes--help
betty
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sad.gif posted on 7-2-2004 at 07:15
halogeno alkanes--help


can someone tell me why Sn 1 is faster than Sn 2 when hydolysing?
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vulture
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[*] posted on 7-2-2004 at 08:11


Please provide more information.

Is this a homework question?




One shouldn't accept or resort to the mutilation of science to appease the mentally impaired.
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betty
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[*] posted on 7-2-2004 at 08:55
Sn1 faster than Sn2-why?


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
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betty
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[*] posted on 8-2-2004 at 22:17
vulture


please can anyone advise--i've spent literally hours looking for this snippet of info to no avail--please help me if you can
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t_Pyro
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[*] posted on 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.
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[*] posted on 10-2-2004 at 01:36
t-Pyro


thanks for your help--I'm really grateful
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