Cho sơ đồ $\large Ca_3(PO_4)_2 \overset{SiO_2+C, 1200^{o}C}{\rightarro

Cho sơ đồ 

$\large Ca_3(PO_4)_2 \overset{SiO_2+C, 1200^{o}C}{\rightarrow} A \overset{+Ca, t^{o}}{\rightarrow}B \overset{HCl}{\rightarrow} C \overset{+O_2, t^{o}}{\rightarrow}$

Vậy A, B, C, D lần lượt là

• A.

  $\Large P_{2}O_{5}, Ca_{3}P_{2}, PH_{3}, H_{3}PO_{4}$

• B.

  $\Large CO , CaO , CaCl_{2}, CaOCl_{2}$

• C.

  $\Large CaSiO_{3}, CaO , CaCl_{3}, CaOCl_{2}$

• D.

  $\Large P , Ca_{3}P _{2}, PH_{3}, H_{3}PO_{4}$

$Ca_3(PO_4)_2 + SiO_2 + C \to CaSiO_3 + P + CO$

$ P + Ca \to Ca_3P_2$

$Ca_3P_2 + HCl \to CaCl_2 + PH_3$

$PH_3 + O_2 \to P_2O_5 + H_2O$