1.

Which of the following is not a reaction of wet process method of production of phosphoric acid?

A. Ca3 (PO4)2 + 3H2SO4 + 6H2O → 2H3PO4 + 3(CaSO4·2H2O)
B. 6HF + SiO2 → H2 SiF6 + 2H2O
C. Ca3 (PO4)2 + 6HCl + 6H2O → 2H3PO4 + 3CaCl2
D. P2 O5 + 3H2O → 2H3PO4
Answer» E.


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