When \( \mathrm{CH}_{2}=\mathrm{CH}-\mathrm{O}-\mathrm{CH}_{2}-\mathrm{CH}_{3} \) reacts with one mole of \( \mathrm{HI} \), one of the products
formed is

• Correct answer
  A

  ethanol
• B

  ethanal
• C

  ethane
• D

  iodoethane

Solution

\( \mathrm{CH}_{2}=\mathrm{CH}-\mathrm{O}-\mathrm{CH}_{2}-\mathrm{CH}_{3} \) reacts with one mole of \( \mathrm{HI} \), one of the products formed is ethanol.
(I) \( \mathrm{CH}_{2}=\mathrm{CH}-\ddot{0}-\mathrm{CH}_{2}-\mathrm{CH}_{3}+\mathrm{H}-1 \)

(II)

So, this mechanism is not possible.
(I)

(II)

\( \bigcap_{\mathrm{CH}_{2}}^{\mathrm{H}} \stackrel{\mathrm{H}}{\mathrm{C}}=\stackrel{+}{\mathrm{O} \mathrm{H}}+\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{I} \)
Vinyl alcohol
1l_{\mathrm{ Tautomeize } }

Hence, the correct answer is option: 'A'.