求有Chegg 账号的帮查一下答案

summer_红茶

http://www.chegg.com/homework-help/questions-and-answers/one-reaction-carried-2-ethoxyethanol-rather-water-q4085239
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alpacallama

a1a1a1 answered this 3 minutes later Was this answer helpful?
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beacouse Water is a source of OH- ion



so in case of dehydrohalogenation



subsitution of Halogen with OH can take place

RustyVacation2783
RustyVacation2783 answered this 4 minutes later Was this answer helpful?
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2,250 answers
because the product will be insoluble in water,

chemstar777
chemstar777 answered this 2 hours later Was this answer helpful?
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For dehydrohalogenation



R-CH2-CH2-Br + KOH ----------> R-CH=CH2 + KBr + H2O



As water is formed as one of the byproduct, if reaction is carried out in water, the water concentration will increase and hance lead to shift of equilibrium of reaction in backward direction. hence rate of reaction decreases with presence of water.

summer_红茶

alpacallama 发表于 2015-10-26 18:14
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