Homework Help: chem

Posted by Anonymous on Wednesday, December 8, 2010 at 5:36am.

1. Explain the effects of the following factors on the relative reactivities of Sn1 and Sn2 reaction

a.Nature of the carbon skeleton(primary, secondary, tertiary)

b.Steric hindrance (primary vs hindered primary)

c)Nature of the leaving groups

d)Primary and tertiary vs allylic and benzylic

e)Aliphatic halides vs. alkenyl halide vs. aromatic halide

2. A plot of log k 1/T give s a straight line with the slope equaling to negative Ea/2 3R. Discuss the validity of plotting log t versus 1/T to produce a straight line with a slope equaling to positive Ea/2.3R

chem - Dr Russ, Wednesday, December 8, 2010 at 6:11am
Try

http://en.wikipedia.org/wiki/SN1_reaction

and

http://en.wikipedia.org/wiki/SN2_reaction
chem - sandy, Monday, December 13, 2010 at 11:09pm
For number 2 you just have to make a graph of ln(t) in your x axis and 1-T as your y-axis where the T is temperature in Kelvins. You could get a "linear" equation from the graph (y=mx+b) so you take teh M and set it eqaul to (Ea)/R....and R is 8.314jouls/mole.K and solve for Ea

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