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Консультация № 190663
08.03.2017, 02:24
0.00 руб.
0
1
1
Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос:
Вычислите массу раствора серной кислоты с массовой долей вещества 10 %, которая необходима для полной нейтрализации раствора гидроксида натрия массой 150 г с массовой долей щелочи 0,08.
Вычислите массу раствора серной кислоты с массовой долей вещества 10 %, которая необходима для полной нейтрализации раствора гидроксида натрия массой 150 г с массовой долей щелочи 0,08.
Обсуждение
08.03.2017, 08:16
общий
это ответ
Здравствуйте, svrvsvrv!
Реакция между серной кислотой и гидроксидом натрия проходит по уравнению
Вычислим молярные массы серной кислоты и гидроксида натрия:
(г),
(г).
Вычислим количество гидроксида натрия, которое нужно нейтрализовать:
(г).
По уравнению реакции видно, что
г серной кислоты нейтрализуют 
г гидроксида натрия. Значит, чтобы нейтрализовать 
г гидроксида натрия, нужно 
(г) серной кислоты.
В
г 
-ного раствора содержится 
г серной кислоты. Значит, 
г серной кислоты содержится в 
г раствора.
Ответ: масса раствора серной кислоты равна
г.
Реакция между серной кислотой и гидроксидом натрия проходит по уравнению
Вычислим молярные массы серной кислоты и гидроксида натрия:
(г), (г).Вычислим количество гидроксида натрия, которое нужно нейтрализовать:
(г).По уравнению реакции видно, что
г серной кислоты нейтрализуют г гидроксида натрия. Значит, чтобы нейтрализовать г гидроксида натрия, нужно (г) серной кислоты.В
г -ного раствора содержится г серной кислоты. Значит, г серной кислоты содержится в г раствора.Ответ: масса раствора серной кислоты равна
г.
5
Большое спасибо за Вашу консультацию.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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