6CO₂ + 6H₂O = C₆H₁₂O₆(А) + 6O₂↑
C₆H₁₂O₆ = С₂H₅OH(B) + CO₂↑
С₂H₅OH + HBr = С₂H₅Br(C) + H₂O
С₂H₅Br + KOH(спирт.) = СH₂=CH₂(D) + KBr + H₂O
2CH3CH2OH → CH2=CH—CH=CH2<span> + 2H</span>2O + H<span>2
</span>CH3-CH2—CH2—CH3<span> → CH</span>2=CH—CH=CH2<span> + 2Н</span><span>2</span>
Al(3+) + N2(3-)
2Al + N2 = 2AlN
BaCl2+CuSO4 = BaSO4(осадок)+CuCl2
Ba(2+) + 2Cl(-) + Cu(2+) + SO4 (2-) = BaSO4(осадок)+ Cu(2+) + 2Cl (-)
Ba(2+) + SO4(2-) = BaSO4(осадок)
Na₂O + H₂O = 2NaOH
NaOH + H₂SO₄ (изб) = NaHSO₄ + H₂O
NaHSO₄ + NaOH = Na₂SO₄ + H₂O