AIIMS 2003
- Exam
- AIIMS
- Year
- 2003
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 15, 16, 17 & 18)
AIIMS 2003 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
The true statement for the acids of phosphorus, H_3 PO_2, H_3 PO_3...
The true statement for the acids of phosphorus, and is
Options
- Athe order of their acidity is
- Ball of them are reducing in nature
- Call of them are tribasic acids
- Dthe geometry of phosphorus is tetrahedral in all the three.
Correct answer
D. the geometry of phosphorus is tetrahedral in all the three.
Step-by-step solution
\mathrm{H}_3 \mathrm{PO}_2, \mathrm{H}_3 \mathrm{PO}_3\mathrm{H}_3 \mathrm{PO}_4\begin{aligned} \mathrm{H}}_{3} \mathrm{PO}}_{2} \rightleftharpoons \mathrm{H}^{+}+\mathrm{H}}_{2} \mathrm{PO}}_{2}^{-} \\
\mathrm{H}}_{3} \mathrm{PO}}_{3} \rightleftharpoons \mathrm{H}^{+}+\mathrm{H}}_{2} \mathrm{PO}}_{3}{ }^{-} \rightleftharpoons2 \mathrm{H}^{+}+\mathrm{HPO}}_{3}{ }^{2-} \\
& \mathrm{H}}_{3} \mathrm{PO}}_{4} \rightleftharpoons \mathrm{H}^{+}+\mathrm{H}}_{2} \mathrm{PO}}_{4}^{-} \rightleftharpoons2 \mathrm{H}^{+}+ \mathrm{HPO}}_{4}{ }^{2-} \\
\rightleftharpoons3 \mathrm{H}^{+}+\mathrm{PO}}_{4}{ }^{3-}
\end{aligned}
s p^3
s p^3