JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
In qualitative test for identification of presence of phosphorous, the compound is heated with an oxidising agent. Which is further treated with nitric acid and ammonium molybdate respectively. The yellow coloured precipitate obtained is _______.
- A \(Na _3 PO _4 \cdot 12 MoO _3\)
- B \(\left( NH _4\right)_3 PO _4 \cdot 12 MoO _3\)
- C \(MoPO _4 \cdot 21 NH _4 NO _3\)
- D \(\left( NH _4\right)_3 PO _4 \cdot 12\left( NH _4\right)_2 MoO _4\)
Answer & Solution
Correct Answer
(B) \(\left( NH _4\right)_3 PO _4 \cdot 12 MoO _3\)
Step-by-step Solution
Detailed explanation
\(2 P +3 Na _2 O _2+\underset{\text { air }}{ O _2} \xrightarrow{\text { fusion }} 2 Na _3 PO _4\) \(Na _3 PO _4+12\left( NH _4\right)_3 MoO _4+21 HNO _3 \rightarrow\) \(\left( NH _4\right)_3 PO _4 \cdot \underset{\text { yellow }}{12 MoO _3}+21 NH _4 NO _3+12 H _2 O\)
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