Дано:
m (SO3) = 20г
V (SO2) = 11.2л
Найти:
m (Na2SO4) - ?
m (Na2SO3) - ?
Решение:
2NaOH + SO3 = Na2SO4 + H2O
2NaOH + SO2 = Na2SO3 + H2O
n (SO3) = m/M = 20 / 80 = 0.25 моль
n (Na2SO4) = n (SO3) = 0.25 моль
m (Na2SO4) = n * M = 0.25 * 142 = 35.5г
n (SO2) = V/Vm = 11.2 / 22.4 = 0.5 моль
n (Na2SO3) = n (SO2) = 0.5 моль
m (Na2SO3) = n * M = 0.5 * 126 = 63г
Ответ: а) m (Na2SO4) = 35.5г; б) m (Na2SO3) = 63г
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Дано:
m (SO3) = 20г
V (SO2) = 11.2л
Найти:
m (Na2SO4) - ?
m (Na2SO3) - ?
Решение:
2NaOH + SO3 = Na2SO4 + H2O
2NaOH + SO2 = Na2SO3 + H2O
n (SO3) = m/M = 20 / 80 = 0.25 моль
n (Na2SO4) = n (SO3) = 0.25 моль
m (Na2SO4) = n * M = 0.25 * 142 = 35.5г
n (SO2) = V/Vm = 11.2 / 22.4 = 0.5 моль
n (Na2SO3) = n (SO2) = 0.5 моль
m (Na2SO3) = n * M = 0.5 * 126 = 63г
Ответ: а) m (Na2SO4) = 35.5г; б) m (Na2SO3) = 63г