Предмет: Химия, автор: anytkatug

СРОЧНОО пожалуйста!!!!

Приложения:

dari969627: 3 эти задания?

anytkatug: да

dari969627: всё готово, только у 12 номера вначале там ошибка одна есть на листе. Так как не указаны в пунктах какие валентности у соединения NIO

anytkatug: Спасибо

Ответы

Автор ответа: dari969627

Ответ:

№12

Так как у кислорода постоянная валентность(O) - II

соответственно в оксиде Никеля(II) будет следующее

NiO Ni(II) O(II)

а в оксиде никеля(III) => Ni2O3 Ni(III) O(II) - то есть вариант г)

№13

Только в пункте Г)P2O5 из предложенных веществ будет фосфор(P) иметь валентность V

У кислорода всегда постоянная валентность(O) - II

№14

У кислорода всегда постоянная валентность(O) - II

Соответственно в пункте В У Хрома(Cr) будет валентность(шестивалентный) VI

CrO3 Cr(VI) O(II)

anytkatug: спасибоо

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