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8090 [49]
3 years ago
7

Which of the following does not correctly describe Sn2 reactions of alkyl halides? A) The mechanism consists of a single step wi

th no intermediates. B) Tertiary halides react faster than secondary halides. C) The transition state species has a pentavalent carbon atom. D) Rate of reaction depends on the concentrations of both the alkyl halide and the nucleophile.
Chemistry
1 answer:
Rashid [163]3 years ago
7 0

Answer:

The correct answer is B the tertiary halides reacts faster than primary halides.

Explanation:

During SN2 reaction the nucleophile attack the alkyl halide from the opposite side resulting in the formation of transition state in which a bond is not completely broken or a new bond is not completely formed.

   After a certain period of time the nucleophile attach with the substrate by substituting the existing nuclophile.

  An increase in the bulkiness in the alkyl halide the SN2 reaction rate of that alkyl halide decreases.This phenomenon is called steric hindrance.

  So from that point of view the that statement tertiary halides reacts faster that secondary halide is not correct.

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Answer:

n=0.430molH_2

Explanation:

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In this case, considering the partial Dalton's law of partial pressures, we can notice that the total pressure equals the pressure of steam and the pressure of hydrogen, which can be determined as shown below:

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