2P + 3Mg = Mg₃P₂
Mg₃P₂ + 6H₂O = 2PH₃ + 3Mg(OH)₂
2PH₃ + 4O₂ = P₂O₅ + 3H₂O
P₂O₅ + 3H₂O = 2H₃PO₄
2H₃PO₄ + 3CaCl₂ = Ca₃(PO₄)₂ + 6HCl
1s2)2s2)2p6)3s2)3p6)4s2)4d8)
CH2(F)-CH(Br)-CH2-CH3
CH3-CH(OH)-CH3
HC≡C-(CH3)C(CH3)-(CH3)C(CH3)-CH2-CH2-CH2-CH3
1)CH2=CH-OH+Cl2=H2C-CH-OH
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Cl Cl
2)CH2=CH-OH+HCl=CH3-CH-OH
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Cl
3)nCH2=CH-OH=(-CH2-CH-)n
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OH
4)CH2=CH-OH+HCOOH=HCOOCH=CH2+H2O
(дегидратация)
5)CH2=CH-OH+H2O=CH3-CH-OH
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OH
Na2CO3+2HBr -> 2NaBr + H2O + CO2
2Na(+) + CO3 (2-) + 2H(+) + 2Br(-) -> 2Na(+) + 2Br(-) + H2O + CO2
2H(+) + CO3(2-) -> H2O + CO2