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Консультация № 201117
08.06.2021, 11:28
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Здравствуйте, уважаемые эксперты! Прошу вас ответить на следующий вопрос: Какой объем водорода выделится на катоде если электролиз водного раствора сульфата калия проводить в течение 2 ч 20 мин при силе тока 2А?
Обсуждение
13.06.2021, 07:00
общий
13.06.2021, 15:41
это ответ
Здравствуйте, finder!
Предлагаю Вам следующее решение задачи
Дано: электролит: K2SO4 -- сульфат калия; t=2 ч 20 мин=8400 с -- продолжительность электролиза; I=2 А -- сила тока.
Определить: V -- объём водорода, выделившегося на катоде.
Решение
Согласно закону Фарадея, искомый объём можно вычислить по формуле V=VM эквIt/F, где VМ экв=11,2 л -- объём 1 моль эквивалентов водорода; F=96485 Кл/моль -- постоянная Фарадея. Значит,
Ответ: V=1,95 л.
Предлагаю Вам следующее решение задачи
Дано: электролит: K2SO4 -- сульфат калия; t=2 ч 20 мин=8400 с -- продолжительность электролиза; I=2 А -- сила тока.
Определить: V -- объём водорода, выделившегося на катоде.
Решение
Согласно закону Фарадея, искомый объём можно вычислить по формуле V=VM эквIt/F, где VМ экв=11,2 л -- объём 1 моль эквивалентов водорода; F=96485 Кл/моль -- постоянная Фарадея. Значит,
V=11,2·2·8400/96485=1,95 (л) (приблизительно).
Ответ: V=1,95 л.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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