Дано:
m (CO2) = 22 г
m (р-ра NaOH) = 20 г
w(р-ра NaOH) = 25 %
Найти: m(Na2CO3)
1) найдем массу NaOH в 20 г 25%-ного раствора:
m(NaOH) = m(р-ра) ∙ w(р-ра) \ 100%
m(NaOH) = 20 г ∙ 25% \ 100% = 5 г
2) найдем вещество в недостатке:
5 г 22 г x г
2NaOH + CO2 = Na2CO3 + H2O
80 г 44 г 106 г
n = m \М
n (2NaOH) = 5 \80 = 0,06 моль (недостаток)
n (CO2) = 22\44 = 0,5 моль (избыток)
3) найдем массу полученной соли (по недостатку):
5 г x г
80 г 106 г
х = 5 г ∙ 106 г\ 80 г = 6,6 г
ответ: m(Na2CO3) = 6,6 г
newzhook.com/story/full-watch-jojo-rabbit-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-1917-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-1917-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-uncut-gems-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-uncut-gems-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-portrait-of-a-lady-on-fire-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-portrait-of-a-lady-on-fire-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-rocketman-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-rocketman-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-marriage-story-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-marriage-story-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-queen-slim-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-queen-slim-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-ford-v-ferrari-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-ford-v-ferrari-2019-streaming-movie-online-hd-free/
newzhook.com/story/full-watch-queen-of-hearts-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-bombshell-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-bombshell-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-spider-man-far-from-home-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-spider-man-far-from-home-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-terminator-dark-fate-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-terminator-dark-fate-2019-streaming-movie-online-hd-free/
newzhook.com/story/full-watch-maleficent-mistress-of-evil-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-maleficent-mistress-of-evil-2019-full-hd-movie-online-free/
newzhook.com/story/123movies-watch-john-wick-chapter-3-parabellum-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-john-wick-chapter-3-parabellum-2019-streaming-movie-online-hd-free/
newzhook.com/story/full-watch-baaghi-3-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-baaghi-3-2020-full-hd-movie-online-free/
newzhook.com/story/123movies-watch-artemis-fowl-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-artemis-fowl-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-the-king-of-staten-island-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-the-king-of-staten-island-2020-streaming-movie-online-hd-free/
newzhook.com/story/full-watch-the-last-days-of-american-crime-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-the-last-days-of-american-crime-2020-full-hd-movie-online-free/
newzhook.com/story/123movies-watch-a-whisker-away-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-a-whisker-away-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-the-lion-king-2019-full-hd-movie-online-free/
newzhook.com/story/full-watch-the-lion-king-2019-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-gretel-hansel-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-gretel-hansel-2020-streaming-movie-online-hd-free/
newzhook.com/story/full-watch-free-guy-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-free-guy-2020-full-hd-movie-online-free/
newzhook.com/story/123movies-watch-feel-the-beat-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-feel-the-beat-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-yvonne-orji-momma-i-made-it-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-yvonne-orji-momma-i-made-it-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-infamous-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-infamous-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-true-history-of-the-kelly-gang-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-true-history-of-the-kelly-gang-2020-streaming-movie-online-hd-free/
newzhook.com/story/watch-bts-bang-bang-con-the-live-full-concert-online-stream/
newzhook.com/story/bts-live-%eb%b0%a9%ed%83%84%ec%86%8c%eb%85%84%eb%8b%a8-bang-bang-con-the-live-full-concert/
newzhook.com/story/full-watch-followed-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-followed-2020-full-hd-movie-online-free/
newzhook.com/story/123movies-watch-mighty-oak-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-mighty-oak-2020-streaming-movie-online-hd-free/
newzhook.com/story/123movies-watch-unhinged-2020-full-hd-movie-online-free/
newzhook.com/story/full-watch-unhinged-2020-streaming-movie-online-hd-free/
Основные соли: (CaOH)2CO3
Кислотные соли: NaHCO3
Средние соли: PbCl2, Mg3(PO4)2