w(H) = n(H)·Ar(H)·100% / Mr(H3PO4) = 3·1·100% / 98 = 3,06%
w(P) = n(P)·Ar(P)·100% / Mr(H3PO4) = 1·31·100% / 98 = 31,63%
w(O) = n(O)·Ar(O)·100% / Mr(H3PO4) = 4·16·100% / 98 = 65,31%
H=3,06%
P=31,63%
O=65,31%
1)Ca-CaO-Ca(OH)2-Ca(NO3)2-CaSO4
2Сa+O2=2CaO
CaO+H2O=Ca(OH)2
Ca(OH)2+2HNO3=Ca(NO3)2+2H2O
Ca(NO3)2+H2SO4=CaSO4+2HNO3
Ca(2+)+SO4(2-)=CaSO4
2)Al2O3-Al2(SO4)3-Al(OH)3-Al2O3
Al2O3+3H2SO4=Al2(SO4)3+3H2O
Al2(SO4)3+6NH4OH=2Al(OH)3+3(NH4)2SO4
2Al(OH)3=Al2O3+3H2O
3)CaCO3-CaO-Ca(OH)2-CaCO3-Ca(NO3)2
CaCO3=CaO+CO2
CaO+H2O=Ca(OH)2
Ca(OH)2+CO2=CaCO3+H2O
CaCO3+CO2+H2O=Ca(HCO3)2
4)Cu-CuO-CuCL2-CuO-Cu-CuSO4-Cu(OH)2
2Cu+O2=2CuO
CuO+2HCl(разб.)=CuCl2+H2O
(СuCl2-CuO)=?
2Cu+O2=2CuO
CuO+H2SO4=CuSO4+H2O
CuSO4+2NaOH=Cu(OH)2+Na2SO4
Mr(H3PO4)=3+31+16*4=98
W(H)=1*3\98=0.30*100%=3.06
W(P)=31\98=0.3163*100%=31.63
W(O4)=64\98=0.6530*100%=65.30