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Консультация № 201240
30.06.2021, 11:19
0.00 руб.
0
2
1
Уважаемые эксперты! Пожалуйста, ответьте на вопрос:В 100 г 100%-й серной кислоты растворили оксид серы(VI) и получили олеум с массовой долей оксида 5%. Его добавили к воде массой 80
г. Рассчитайте массовую долю серной кислоты в полученном растворе.
Ответ приведите в %
с точностью до десятых.
г. Рассчитайте массовую долю серной кислоты в полученном растворе.
Ответ приведите в %
с точностью до десятых.
Обсуждение
04.07.2021, 06:28
общий
это ответ
Здравствуйте, kuznetsova.79!
Предлагаю Вам следующее решение задачи.
Дано:
г -- масса 
-й серной кислоты, в которой растворили оксид серы (VI); 
-- массовая доля оксида в полученном олеуме; 
г -- масса воды, к которой добавили полученный олеум.
Определить:
-- массовую долю серной кислоты в полученном растворе.
Если оксид серы растворили в г серной кислоты и получили олеум с массовой долей оксида 
то г серной кислоты -- это 
массы олеума, а масса олеума составляет 
(г).
Если олеум массой
г добавить к воде массой г, то получится раствор масса которого равна 
(г). Вычислим массовую долю серной кислоты в этом растворе:
или 
Ответ:
Предлагаю Вам следующее решение задачи.
Дано:
г -- масса -й серной кислоты, в которой растворили оксид серы (VI); -- массовая доля оксида в полученном олеуме; г -- масса воды, к которой добавили полученный олеум.Определить:
-- массовую долю серной кислоты в полученном растворе.Решение
Если оксид серы растворили в
г серной кислоты и получили олеум с массовой долей оксида то г серной кислоты -- это массы олеума, а масса олеума составляет (г).Если олеум массой
г добавить к воде массой г, то получится раствор масса которого равна (г). Вычислим массовую долю серной кислоты в этом растворе: или Ответ:
5
Об авторе:
Facta loquuntur.
Facta loquuntur.
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