Ответ:
дано
m(ppa CH3COOH) = 80 g
W(CH3COOH) = 60%
η(CH3COOCH3) = 90%
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m(ppa CH3COOCH3)-?
m(CH3COOH) = 80 * 60% / 100% = 48 g
CH3COOH+CH3OH-->CH3COOCH3+H2O
M(CH3COOH) = 60 g/mol
n(CH3COOH) = m/M = 48 / 60 = 0.8 mol
n(CH3COOH) = n(CH3COOCH3) = 0.8 mol
M(CH3COOCH3) = 74 g/mol
m(CH3COOCH3) = n*M = 0.8 * 74 = 59.2 g
m(ppa CH3COOCH3) = 59.2 * 100% / 90% = 65.78g
ответ 65.78г
Объяснение: