The oxoacid of phosphorus having P atoms in +4,+3, and +4 oxidation states respectively, is · ABC26IN1281

Subject: Inorganic Chemistry · Chapter: Main Group Elements · Topic: Main Group Elements – General · Exam: CSIR NET JUNE 2015 · Marks: 2 · Difficulty: Medium

The oxoacid of phosphorus having P atoms in $+4,+3$, and +4 oxidation states respectively, is

(a)$\mathrm{H}_{5} \mathrm{P}_{3} \mathrm{O}_{10}$

(b)$\mathrm{H}_{5} \mathrm{P}_{3} \mathrm{O}_{7}$

(c)$\mathrm{H}_{5} \mathrm{P}_{3} \mathrm{O}_{8}$

(d)$\mathrm{H}_{5} \mathrm{P}_{3} \mathrm{O}_{9}$

Answer

Answer: C ✓ checked by 4AB · confidence high

Explanation

H₅P₃O₈: 5 + Σox(P) − 16 = 0 ⇒ Σox = 11 = 4 + 3 + 4 (the +4,+3,+4 isohypophosphate-type acid). H₅P₃O₁₀ needs 15 (+5,+5,+5), H₅P₃O₉ 13, H₅P₃O₇ 9.

Study loop for Main Group Elements

1. Practise the PYQsPrevious-year questions, with answers

· Browse this chapter in the app