MCQ
Phosphoric acid is prepared on large scale from $......$
- APhosphorus
- BDolomite
- ✓Phosphorite
- DMalachite
✓
Answer
Correct option: C.
Phosphorite
Phosphoric acid is prepared on large scale from phosphorite, an ore of phosphorus or fluorapatite, known as phosphate rock$, 3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot \mathrm{CaF}_2,$ by the addition of concentrated $(93\%)$ sulfuric acid in a series of well-stirred reactors.
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