Дано:
m (CH3COOH p-p) = 60г
W (CH3COOH) = 10% = 0.1
Найти:
m (CH3COONa) - ?
Решение:
CH3COOH + NaOH = CH3COONa + H2O
m (CH3COOH) = W (CH3COOH) * m (CH3COOH p-p) = 0.1 * 60 = 6г
n (CH3COOH) = m/M = 6 / 60 = 0.1 моль
n (CH3COONa) = n (CH3COOH) = 0.1 моль (по уравнению)
m (CH3COONa) = n * M = 0.1 * 82 = 8.2г
Ответ: m (CH3COONa) = 8.2г