M = n*Mr
Mr(NaCl) = 23 + 35,5 = 58,5
m(NaCl) = 2*58,5 = 117г
H2C=CH2 + H2O = CH3-CH2-OH
CH3-CH2-OH + CuO = CH3COH + Cu + H2O
CH3COH + 2Cu(OH)2= CH3COOH + Cu2O 2H2O
CH3COOH + Cl2 = CH2ClCOOH + HCl
CH2ClCOOH + CH3OH = CH2ClCOOCH3 + H2O
(с6h10o5)n+n/2H2o--------->n/2 C12H22O11