а) 2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
3Ca(OH)2 +2 H3PO4 = Ca3(PO4)2 + 6H2O
б) BaO + 2HNO3 = Ba(NO3)2 + H2O
Ba(NO3)2 + 2NaOH = Ba(OH)2 + 2NaNO3
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а) 2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
3Ca(OH)2 +2 H3PO4 = Ca3(PO4)2 + 6H2O
б) BaO + 2HNO3 = Ba(NO3)2 + H2O
Ba(NO3)2 + 2NaOH = Ba(OH)2 + 2NaNO3