Дано
m(ppa CH3COOH) = 64 g
W(CH3COOH) = 60%
m(CH3COH) = 32 g
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m(CH3COOCH3)-?
m(CH3COOH) = 64*60% / 100% = 38.4 g
M(CH3COOH) = 60 g/mol
n(CH3COOH) = m/M = 38.4 / 60 = 0.64 mol
M(CH3OH) = 32 g/mol
n(CH3OH) = m/M = 3.2 / 32 = 0.1 mol
n(CH3COOH) > n(CH3OH)
CH3OH+CH3COOH-->CH3COOCH3+H2O
n(CH3OH) = n(CH3COOCH3) = 0.1 mol
M(CH3COOCH3) = 74 g/mol
m(CH3COOCH3) = n*M = 0.1*74 = 7.4 g
ответ 7.4 г