1)4P+5O2=2P2O5
2)2P2O5+6H2O=4H3PO4
3)2H3PO4+3CaCl2=6HCl+Ca3(PO4)2
1. CH3OH +HCl=CH3Cl+H2O
2CH3Cl +2Na=CH3-CH3 +2 NaCl
CH3-CH3=Ni=CH2=CH2 +H2
CH2=CH2+H2O=CH3-CH2OH
CH3-COOH+CH3-CH2OH=CH3-COOCH2-CH3 +H2O
Ca(OH)2 +H2SO4 = CaSO4 +2H2O
Ca(OH)2 + CO2 = CaCO3 +H2O
Ca(OH)2 +Na2CO3 = CaCO3 +2NaOH
5)MgO, NaOH
6)H2SO4, ZnO, KH2PO4, SO2
7)SO3, Ba(OH)2
8)SO2, H2SO4, Na2SO4
9)KOH, Al2O3, Al(OH)3, H2O
10)HNO3, CO2, CuSO4, P2O5
11) можно только 2-ой