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dyakonovdanilka

1) НООС-СООН --t--->HCOOH + CO2   CO2 + Ca(OH)2 = CaCO3(осадок)  + H2O    n(HOOC-COOH) = m/M = 27/ 90 = 0.3 моль   n(CO2) = 0.3 моль, n(CaCO3) = 0.3 моль, m(CaCO3) = M*n = 100*0.3 = 30г 2) СН2=СН-СООН + Br2 ----> CH2Br-CHBr-COOH    n(CH2=CH-COOH) = m/M = 7.3/ 72 = 0.101 моль    n(Br2) = 0.101 моль, m(Br2) = M*n = 160*0.101 = 16.16 г  w(Br2) = 16.16*100/200 = 8.1%

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