What is the action of following on ethyl bromide ?(a) silver nitrite(b) Mg in dry ether(c) alcoholic sodium hydroxide
Q.18 What is the action of following on ethyl bromide ?
(a) silver nitrite
(b) Mg in dry ether
(c) alcoholic sodium hydroxide
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Answer:
(a) Silver nitrite: gives nitroethane (AgNO2 attacks through N).
C2H5Br + AgNO2 → (alc., Δ) C2H5–NO2 + AgBr
(b) Mg in dry ether: gives the Grignard reagent, ethylmagnesium bromide.
C2H5Br + Mg → (dry ether) C2H5MgBr
(c) Alcoholic NaOH: dehydrohalogenation (β-elimination) gives ethene.
CH3–CH2Br + NaOH (alc.) → (Δ) CH2=CH2 + NaBr + H2O
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· 29 Oct 2026
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