Question

Ca3(PO4)2-->P-->P2O5-->H3PO4-->Ca(H2PO4)2-->CaHPO4

Answer 1

1)Ca3(PO4)2 + 5C + 3SiO2 = 3CaSiO3 + 2P + 5CO
2)4P + 5O2 = 2P2O5

3)P2O5 + 3H2O = 2H3PO4

4)H3PO4+ Ca(OH)2 = CaHPO4 + 2H2O

5)Са(Н2РО4)2 + Са(ОН)2 = 2СаНРО4 + 2Н2О

Answer 2

Chemical Reaction: Ca3(PO4)2 -> P -> P2O5 -> H3PO4 -> Ca(H2PO4)2 -> CaHPO4

The given chemical reaction involves the transformation of Ca3(PO4)2 into CaHPO4 through several intermediate steps. Let's break down each step:

1. Ca3(PO4)2 -> P: - In this step, Ca3(PO4)2 decomposes to form phosphorus (P).

2. P -> P2O5: - The phosphorus obtained in the previous step reacts with oxygen (O2) to form phosphorus pentoxide (P2O5).

3. P2O5 -> H3PO4: - Phosphorus pentoxide (P2O5) reacts with water (H2O) to produce phosphoric acid (H3PO4).

4. H3PO4 -> Ca(H2PO4)2: - Phosphoric acid (H3PO4) reacts with calcium hydroxide (Ca(OH)2) to form calcium dihydrogen phosphate (Ca(H2PO4)2) [[2]](https://elar.urfu.ru/bitstream/10995/34779/1/978-5-321-02439-3.pdf).

5. Ca(H2PO4)2 -> CaHPO4: - Calcium dihydrogen phosphate (Ca(H2PO4)2) undergoes a dehydration reaction to yield calcium monohydrogen phosphate (CaHPO4).

So, the overall reaction can be summarized as follows: Ca3(PO4)2 -> P -> P2O5 -> H3PO4 -> Ca(H2PO4)2 -> CaHPO4.

Please note that the specific conditions and catalysts involved in each step may vary, and the reaction may be influenced by factors such as temperature and pressure.

I hope this explanation helps! Let me know if you have any further questions.