Предмет: Химия, автор: Аноним

помогите решите цепочки реакций
1)P2O5->H3O4->K3O4->Ca3(PO4)2->CaSO4
2)Ca->CaO->Ca(OH)2->CaCL2->CaPO3->CaO
пожалуйста это на завтра

Ответы

Автор ответа: Андрюша1499
0
1)         P2O5+3H2o=2H3PO4
H3PO4+KOH=H2O+K3PO4
2K3PO4 +3Ca(Oh)2=Ca3(Po4)2+6KOH
3H2SO4+ Ca3(PO4)2 = 2H3PO4 + 3CaSO4
2)            2Ca+O2=2CaO
   CaO+H2o=Ca(Oh)2
Ca(Oh)2+2HCl=CaCl2+2H2O
3CaCl2 +2Na3Po=Ca3(Po4)2+6NaCl
Ca3(PO4)2 = 3CaO + P2O5

Автор ответа: Исроил
0
1)   P2O5+3H2O=2H3PO4
      H3PO4+3KOH=K3PO4+3H2O
      2K3PO4+3Ca(OH)2=Ca3(PO4)2+6KOH
      Ca3(PO4)2+3H2SO4(конц)=2H3PO4+3CaSO4  - остатка     или
      Ca3(PO4)2+2H2SO4(конц)=Ca(H2PO4)2+2CaSO4  - остатка  
   
2)  2Ca+O2=2CaO
      CaO+H2O=Ca(OH)2
     Ca(OH)2+2HCl =CaCl2+2H2O
     3CaCl2+2H3PO4=Ca3(PO4)2+6HCl
     Ca3(PO4)2 ==P2O5+3CaO

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