In the formation of alkene when alcoholic $K O H$ reacts with $C H_{3} C H_{2} C l$ . What is the attacking species in the reaction?

C_{2} H_{5} O^{⊖}

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O H^{⊖}

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_{3} O

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K^{\oplus}

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Solution

The correct option is A $C_{2} H_{5} O^{⊖}$
Alkyl halides (R-X) on heating with alcoholic potash (potassium hydroxide dissolved in alcohol, say, ethanol) eliminate one molecule of halogen acid to form alkenes. This reaction is known as dehydrohalogenation. This is an example of β-elimination reaction since hydrogen atom is eliminated from the β carbon atom (carbon atom next to the carbon to which halogen is attached)

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In the formation of alkene when alcoholic KOH reacts with CH3CH2Cl. What is the attacking species in the reaction?

In the formation of alkene when alcoholic $K O H$ reacts with $C H_{3} C H_{2} C l$ . What is the attacking species in the reaction?