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31. Which reaction is slowest? ea cod A A) A B) B C) 32. If a...

Question:

31. Which reaction is slowest? ea cod A A) A B) B C) 32. If a mixture has an ee of 90% , what is the percentage of each enant
31. Which reaction is slowest? ea cod A A) A B) B C) 32. If a mixture has an ee of 90% , what is the percentage of each enantionmer? A) 65% : 35% B ) 55%: 45% C) 80% : 20% D) 95% : 5% 33. Which of the following alkyl halides is a primary alkyl halide? Br IV II A) I B) II C) III D) IV SE wllot so doiW fed e nou VGM

Answers

31)
The one with highest activation energy will be lowest.

Activation energy is energy difference between reactant and activated complex.
This energy is largest in A
So, A is slowest.

Answer: A

32)
Let percentage of smallest enantiomer be x
%ee = 100 - 2*x
90 = 100 - 2*x
2*x = 10
x = 5 %

Other enantiomer would be 95 %
Answer: D

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