А) 3K₂O + P₂O₅ =2K₃PO₄<span>
б) </span>FeO + 4KOH = K₄FeO₃ + 2H₂O (t° 400°-500°)
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в) BaO + 2HNO3 = Ba(NO</span>₃<span>)</span>₂+H₂O<span>
г) CaO + H</span>₂O<span> =Ca(OH)</span>₂
3NaOH + H3PO4 → Na3PO4 + 3H2O
2NaOH + FeCl2 →2NaCl + Fe(OH)2
2NaOH + CO2 →NaCO3 + H2↑
2NaOH + CuSO4 → Na2SO4 + Cu(OH)2
6NaOH + P4O6 → 2Na2HPO3 + Na2P2H2O5 + H2O
1) Na2O + 2HF = 2NaF + H2O
2) Fe(OH)3 + 3HCl = FeCl3 + 3H2O
3) SrO + 2HCl = SrCl2 + H2O
4) Ca(OH)2 + 2HBr = CaBr2 + 2H2O
5) 2LiOH + H2S = Li2S + 2H2O