JEE Main · 2022 · 28 Jul 2022 · Shift 2 · p-Block Elements

White phosphorus reacts with thionyl chloride to give

(A) $PCl_{5}, SO_{2}$ and $S_{2} Cl_{2}$
(B) $PCl_{3} . SO_{2}$ and $S_{2} Cl_{2}$ ✓ Correct
(C) $PCl_{3}, SO_{2}$ and $Cl_{2}$
(D) $PCl_{5}, SO_{2}$ and $Cl_{2}$

Answer: (B)

Solution

White phosphorus (

P X_{4}

) reacts with thionyl chloride (

SOCl X_{2}

) according to the equation:

P X_{4} + 8 SOCl X_{2} 4 PCl X_{3} + 4 SO X_{2} + 2 S X_{2} Cl X_{2}

The products are phosphorus trichloride (

PCl X_{3}

), sulfur dioxide (

SO X_{2}

), and disulfur dichloride (

S X_{2} Cl X_{2}

JEE Main · 2022 · 28 Jul 2022 · Shift 2 · Single correct option

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