Дано:m (HCl p-p) = 200гW (HCl) = 30% = 0.3Найти:V (CO2) - ?Решение:Na2CO3 + 2HCl = 2NaCl + CO2 + H2Om (HCl) = m (HCl p-p) * W (HCl) = 200 * 0.3 = 60гn (HCl) = m/M = 60 / 36.5 = 1.644 мольn (CO2) = 0.5n (HCl) = 0.5 * 1.644 = 0.822 мольV (CO2) = n * Vm = 0.822 * 22.4 = 18.4128лОтвет: V (CO2) = 18.4128л