Which of the following reactions does not give H₃ PO₄ ? · ABC26IN0698
Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Exam: JAM 2005-2022 · Marks: 2 · Difficulty: Easy
Which of the following reactions does not give $\mathrm{H}_{3} \mathrm{PO}_{4}$ ?
(a)$\mathrm{Ca}_{3}\left(\mathrm{PO}_{4}\right)_{2}+\mathrm{H}_{2} \mathrm{SO}_{4} \longrightarrow$
(b)$\mathrm{P}_{4} \mathrm{O}_{6}+\mathrm{H}_{2} \mathrm{O} \longrightarrow$
(c)$\mathrm{PCl}_{5}+\mathrm{H}_{2} \mathrm{O} \longrightarrow$
(d)$\mathrm{P}_{4} \mathrm{S}_{10}+\mathrm{H}_{2} \mathrm{O} \longrightarrow$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
P₄O₆ + 6H₂O → 4H₃PO₃ (phosphorous acid), not H₃PO₄ (b); the others all give phosphoric acid.
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