NEET UG CHEMISTRY MCQ: ALCOHOLS & PHENOLS & ETHERS

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3 moles of ethanol react with one mole of phosphorus tribromide to form 3 moles of bromoethane and one mole of

{X}

. Which of the following is

{X}

View answer and explanation

Correct option: D

{H}_3 {PO}_3

Option D (

{H}_3 {PO}_3

) is correct because the reaction of ethanol with phosphorus tribromide produces bromoethane and phosphorous acid (

{H}_3 {PO}_3

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{\text{C}}{{\text{H}}_3}{\text{C}}{{\text{H}}_2}{\text{OH}}\xrightarrow{{{\text{PCC}}}}{\text{A}}\xrightarrow[{\left( {{\text{ii}}} \right){\text{ }}{{\text{H}}_2}{\text{O/}}{{\text{H}}^ + }}]{{\left( {\text{i}} \right){\text{ HCN}}}}{\text{B}}

\mathrm{O}_2

{\mathrm{P}_2}{\mathrm{S}_5}