AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
The disproportionation products of ortho phosphorous acid are
- A \(\mathrm{H}_3 \mathrm{PO}_4 ; \mathrm{PH}_3\)
- B \(\mathrm{H}_3 \mathrm{PO}_2, \mathrm{H}_3 \mathrm{PO}_3\)
- C \(\mathrm{H}_3 \mathrm{PO}_4, \mathrm{HPO}_3\)
- D \(\mathrm{H}_3 \mathrm{PO}_2, \mathrm{P}_2 \mathrm{H}_4\)
Answer & Solution
Correct Answer
(A) \(\mathrm{H}_3 \mathrm{PO}_4 ; \mathrm{PH}_3\)
Step-by-step Solution
Detailed explanation
Orthophosphorous acid on heating disproportionate to give orthophosphoric acid and phosphine. \(4 \mathrm{H}_3 \mathrm{PO}_3 \xrightarrow{\Delta} 3 \mathrm{H}_3 \mathrm{PO}_4+\mathrm{PH}_3\)
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