Question:
Which among the following oxoacids of phosphorus shows a tendency of disproportionation?
Which among the following oxoacids of phosphorus shows a tendency of disproportionation?
Updated On: Feb 9, 2024
- Phosphinic acid $\ce{(H_3PO_2)}$
- Orthophosphoric acid $\ce{(H_3PO_4)}$
- Phosphonic acid $\ce{(H_3PO_3)}$
- Pyrophosphoric acid $\ce{(H_4P_2 O_7)}$
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The Correct Option is C
Solution and Explanation
Phosphonic acid $\left( H _{3} PO _{3}\right)$, oxoacid of phosphorus shows a tendency of disproportionation. On heating $H _{3} PO _{3}$ disproportionates to give orthophosphoric acid and phosphene gas.
$4 H _{3} PO _{3} \stackrel{ \Delta }{\longrightarrow} 3 H _{3} PO _{4}+ PH _{3}$
$4 H _{3} PO _{3} \stackrel{ \Delta }{\longrightarrow} 3 H _{3} PO _{4}+ PH _{3}$
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Concepts Used:
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- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
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