Дегидратация
<span>C2H5OH ----> C2H4 + H2O
</span>гидратация
<span>С2Н4 + Н2О ---> C2H5OH
</span>
<span>P -> Ca</span>₃<span>P</span>₂<span> -> PH</span>₃<span> -> P</span>₂<span>O</span>₅<span> -> K</span>₃<span>PO</span>₄<span> -> Ag</span>₃<span>PO</span>₄
2P + 3Ca = Ca₃P₂
Ca₃P₂ + 6HCl = 2PH₃↑ + 3CaCl₂
2PH₃ + 4O₂ = P₂O₅ + 3H₂O
P₂O₅ + 6KOH = 2K₃PO₄ + 3H₂O
K₃PO₄ + 3AgNO₃= Ag₃PO₄↓ + 3KNO₃
CO2 + Ca(OH)2 = CaCO3 + H2O
n(Ca(OH)2) = 3,7/74 = 0,05 моль
V(CO2) = <span>0,05*22,4 = 1,12 л</span>