Verified answer

Дано:

m(CH3COOH) = 300 г

w(CH3COOH) = 20%

Найти:

m(CH3COONa) - ?

Решение:

CH3COOH + NaOH = CH3COONa +H2O

m(CH3COOH) = 300*0.2 = 60 г

M(CH3COOH) = 60 г/моль

n(CH3COOH) = 60/60 = 1 моль

n(CH3COONa) = n(CH3COOH) = 1 моль

M(CH3COONa) = 82 г/моль

m(CH3COONa) = n * M = 1 *82 = 82 г