Закончите уравнения C2H5COOH + Ca = HCOOH + Na2O = C3H7COOH + CaCO3 = HCOOH + Cu(OH)2 =
1) 2C2H5COOH + Ca = (C2H5COO)2Ca + H2 2) 2HCOOH + Na2O = 2HCOONa + H2O 3) 2C3H7COOH + CaCO3 = (C3H7COO)2Ca + CO2 + H2O 4) 2HCOOH + Cu(OH)2 = (HCOO)2Cu + 2H2O
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