Write the reaction equation Ca-CaO-Ca (OH) 2-Ca (NO3) 2-CaSO4 P-P2O5-H3PO4-Ca3 (PO4) 2-H3PO4-CA (H2PO4).

1) Ca + O= 2CaO;

CaO + H2O = Ca(OH)2;

Ca(OH)2 + 2NaNO=  Ca(NO3)2 + 2NaOH;

Ca(NO3)2 + K2SO= CaSO4 + 2KNO3;

2) 4P + 5O= 2P2O5;

Р2О5 + 3Н2O = 2Н3РО4;

3РО4 + 3Ca(OH)= Ca3(РО4)+ 6H2O;

Са3(РО4)2 + 6НNO3 = 2H3PO4 + 3Ca(NO3)2;

2H3PO+ Ca(OH)2 = Ca(H2РО4)+ 2H2O.



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