Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryMARCH 20242 Marks
Question
Write preparation of $(a)$ diethyl ether $(b)$ ethyl cyanide from ethyl bromide.
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Answer
The preparation of diethyl ether $($ ethoxyethane $)$ involves the dehydration of ethanol using a dehydrating agent like concentrated sulfuric acid $(H_2SO_4)$ at $413 K$. This process removes water $(H_2O)$ from two ethanol molecules, resulting in the formation of diethyl ether.
The preparation of ethyl cyanide from ethyl bromide involves reacting ethyl bromide with potassium cyanide $(KCN)$ to form ethyl cyanide and potassium bromide $(KBr)$. This reaction is a key step in converting a halide to a nitrile, specifically ethyl bromide to ethyl cyanide.
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