1) б
2)слабая одноосновная кислородосодержащая
3) H⁺Cl⁺⁷O₄⁻²
H₂⁺Cr⁺⁶O₄⁻²
H₂⁺Cr₂⁺⁶O₇⁻
H⁺N⁺³O₂⁻²
H₄⁺P₂⁺⁵O₇⁻²
ZnO+2HNO₃=Zn(NO₃)₂+H₂O
ZnO+2H⁺+NO₃⁻ =Zn²⁺ + 2NO₃⁻ + H₂O
ZnO+2H⁺= Zn²⁺+H₂O
2Al+3H₂SO₄=Al₂(SO₄)₃+3H₂
2Al°+6H⁺+3SO₄²⁻=2Al³⁺+3H₂°
2Al°+6H⁺=2Al³⁺+3H₂
С2H4+CL2=C2H4Cl2
C2H4Cl2+2NaOH(спирт)-->C2H2+2NaCl+2H2O
3C2H2--(t,C)-->C6H6
C6H6+CH3Cl--(AlCl3)-->C6H5CH3+HCl
5C6H5CH3+6KMnO4+9H2SO4-->5C6H5COOH+3K2SO4+6MnSO4+14H2O
4P + 5O2 = 2P2O5
P2O5 + 3H2O = 2H3PO4
2H3PO4 + Ca(OH)2 = Ca(H2PO4)2 + 2H2O
Ca(H2PO4)2 + Са(ОН)2 = 2CaHPO4 + 2Н2О
2СаНРО4+Са(ОН)2=Са3(РО4)2+2Н2О
<u>№3.</u>
2Fe + 3Cl₂ = 2FeCl₃.
2Al + 3S = Al₂S₃.
WO₃ + 3H₂ = W + 3H₂O.
4Li + O₂ = 2Li₂O.
<u>№5.</u>
2Fe + 3Cl₂ = 2FeCl₃.