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The p-Block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe p-Block Elements1 Mark
MCQ
In the electrothermal process, the compound displaced by silica from calcium phosphate is:
  • A
    Calcium
  • B
    Phosphine
  • C
    Phosphorus
  • ✓
    Phosphorus pentoxide
✓

Answer

Correct option: D.
Phosphorus pentoxide
In the electrothermal process, the compound displaced by silica from calcium phosphate is phosphorus pentoxide. It is then reduced by coke in electric furnace to get white phosphorus.
$\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2+{ }_3 \mathrm{SiO}_2 \rightarrow{ }_3 \mathrm{CaSiO}_3+\mathrm{P}_2 \mathrm{O}_5$​

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