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Консультация № 190690
14.03.2017, 07:50
0.00 руб.
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Здравствуйте! Прошу помощи в следующем вопросе:
Какие соединения и простые вещества могут проявлять как окислительные, так и восстановительные свойства: O2 , H2S, Zn, F2, KNO2 ? Почему?
С помощью метода электронного баланса расставьте коэффициенты в уравнении реакции:
Сu + HNO3 (конц.) [$8594$] Cu(NO3)2 + NO2 + H2O.
Какие соединения и простые вещества могут проявлять как окислительные, так и восстановительные свойства: O2 , H2S, Zn, F2, KNO2 ? Почему?
С помощью метода электронного баланса расставьте коэффициенты в уравнении реакции:
Сu + HNO3 (конц.) [$8594$] Cu(NO3)2 + NO2 + H2O.
Обсуждение
20.03.2017, 06:37
общий
это ответ
Здравствуйте, nikita9581!
Рассмотрим первый вопрос.
Кислород O[sub]2[/sub] - восстановитель в соединениях с фтором, электроотрицательность которого больше. Окислитель в соединениях с другими элементами.
Сероводород H2S - только восстановитель. Сера в данном соединении находится в своей низшей степени окисления -2 и может только отдавать электроны.
Цинк - только восстановитель.
Фтор F2 - только окислитель.
Нитрит калия KNO[sub]2[/sub] - может быть как окислителем, так и восстановителем. Азот в данном соединении имеет промежуточную степень окисления +3.
Рассмотрим первый вопрос.
Кислород O[sub]2[/sub] - восстановитель в соединениях с фтором, электроотрицательность которого больше. Окислитель в соединениях с другими элементами.
Сероводород H2S - только восстановитель. Сера в данном соединении находится в своей низшей степени окисления -2 и может только отдавать электроны.
Цинк - только восстановитель.
Фтор F2 - только окислитель.
Нитрит калия KNO[sub]2[/sub] - может быть как окислителем, так и восстановителем. Азот в данном соединении имеет промежуточную степень окисления +3.
Об авторе:
Facta loquuntur.
Facta loquuntur.
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