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JIPMER 2017
Exam
JIPMER
Year
2017
Subject
Chemistry
Chapter
p Block Elements (Group 15, 16, 17 & 18)

JIPMER 2017 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Among the following compounds, which will produce POCl_3 with PCl_5...

Among the following compounds, which will produce POCl3\mathrm{POCl}_3 with PCl5\mathrm{PCl}_5.

Options

  1. AOnly O2\mathrm{O}_2
  2. BO2\mathrm{O}_2 and CO2\mathrm{CO}_2
  3. CCO2,O2\mathrm{CO}_2, \mathrm{O}_2 and P4O10\mathrm{P}_4 \mathrm{O}_{10}
  4. DSO2,H2O,H2SO4\mathrm{SO}_2, \mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{SO}_4 and P4O10\mathrm{P}_4 \mathrm{O}_{10}

Correct answer

D. SO2,H2O,H2SO4\mathrm{SO}_2, \mathrm{H}_2 \mathrm{O}, \mathrm{H}_2 \mathrm{SO}_4 and P4O10\mathrm{P}_4 \mathrm{O}_{10}

Step-by-step solution

PCl5\mathrm{PCl}_5 on reaction with the given compounds produce POCl3\mathrm{POCl}_3. 2PCl5+SO2⟶POCl3+SOCl2PCl5+H2O⟶POCl3+2HCl2PCl5+H2SO4⟶SO2Cl2+2POCl3+2HCl6PCl5+P4O10⟶10POCl3\begin{aligned}& 2 \mathrm{PCl}_5+\mathrm{SO}_2 \longrightarrow \mathrm{POCl}_3+\mathrm{SOCl}_2 \\ & \mathrm{PCl}_5+\mathrm{H}_2 \mathrm{O} \longrightarrow \mathrm{POCl}_3+2 \mathrm{HCl} \\ & 2 \mathrm{PCl}_5+\mathrm{H}_2 \mathrm{SO}_4 \longrightarrow \mathrm{SO}_2 \mathrm{Cl}_2+2 \mathrm{POCl}_3+2 \mathrm{HCl} \\ & 6 \mathrm{PCl}_5+\mathrm{P}_4 \mathrm{O}_{10} \longrightarrow 10 \mathrm{POCl}_3\end{aligned}
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