Пребавте к пропииновой кислоте: Ba;BaO;BaOH;BaCO3;итиловый спирт
2СH3CH2COOH + Ba = (CH3CH2COO)2Ba + H2 2CH3CH2COOH + BaO = (CH3CH2COO)2Ba + H2O 2CH3CH2COOH + Ba(OH)2 = (CH3CH2COO)2Ba + 2H2O 2CH3CH2COOH + BaCO3 =(CH3CH2COO)2Ba + H2O + CO2