The compounds X and Y in the following reactio are P₄ S₁₀ EtOH(X) Cl₂(Y) p-O₂ NC₆ H₄ ONa Parathion · ABC26IN0439

Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Element – General · Exam: GATE 2005-2021 · Marks: 2 · Difficulty: Medium

The compounds X and Y in the following reactio are
\[ \mathrm{P}_{4} \mathrm{S}_{10} \xrightarrow{\mathrm{EtOH}}(\mathrm{X}) \xrightarrow{\mathrm{Cl}_{2}}(\mathrm{Y}) \xrightarrow{\mathrm{p}-\mathrm{O}_{2} \mathrm{NC}_{6} \mathrm{H}_{4} \mathrm{ONa}} \text { Parathion } \]
(a)$\mathrm{X}=(\mathrm{Et})_{2} \mathrm{P}(\mathrm{S}) \mathrm{SH} ; \mathrm{Y}=(\mathrm{Et})_{2} \mathrm{P}(\mathrm{S}) \mathrm{Cl}$
(b)$\mathrm{X}=(\mathrm{EtO})_{2} \mathrm{P}(\mathrm{S}) \mathrm{SH} ; \mathrm{Y}=(\mathrm{EtO})_{2} \mathrm{P}(\mathrm{S}) \mathrm{Cl}$
(c)$\mathrm{X}=(\mathrm{EtO})_{2} \mathrm{PSH} ; \mathrm{Y}=(\mathrm{EtO})_{2} \mathrm{PCl}$
(d)$\mathrm{X}=(\mathrm{Et})_{3} \mathrm{PO} ; \mathrm{Y}=(\mathrm{Et})_{3} \mathrm{PCl}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
P₄S₁₀ + EtOH → (EtO)₂P(S)SH (X); Cl₂ → (EtO)₂P(S)Cl (Y), which with sodium p-nitrophenoxide gives parathion (b).

Study loop for Main Group Elements

1. Practise the PYQsPrevious-year questions, with answers

· Browse this chapter in the app