Предмет: Химия, автор: diana13456789

Дам 40 баллов!!!! Помогите прошу вас, очень надо
Когда учащиеся узнали, что более активный металл способен вытеснять ионы другого металла из водных растворов его солей, Игорь предложил получить железо, добавив к раствору хлорида этого металла кусочек металлического бария.
Ева его поддержала.
Сергей сказал, что этот способ получения выбран неудачно.

Кто из учащихся прав? Аргументируй ответ.

Ответы

Автор ответа: natalikochetovakoche
6

Прав, Сергей, т.к. Ba - очень активный металл и в растворе соли прореагирует не с ней, а с водой, образуется щелочь Ba(oh)2, металл вытеснить не получиться.

Если бы это был, например Сr, то реакция пошла бы, и железо вытеснилось, т.к. он стоит до железа, но не является очень активным металлом

Очень активные металлы в таблице активности металлов находятся от Li до Al

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