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Q. Give the order of reaction rate with alc- $KOH$
Question

NTA AbhyasNTA Abhyas 2022

Solution:

When heated with strong bases, alkyl halides typically undergo a 1,2-elimination reactions to generate alkenes. Typical bases are $NaOH$ or $KOH$ or $NaOR$ or $KOR$ (alkoxide) especially $NaOEt$ or $KOtBu$ in the alcohol as solvent.
$3^{o}$ halide easily give elimination reaction. alcoholic $K O H$ favours $E_{2}$ reaction order $3^{\circ}>2^{\circ}>1^{\circ}$