Предмет: Химия, автор: mashaswedan

Визначте речовину Х у ланцюжку перетворень:

P → Х → H3PO4

Ответы

Автор ответа: m1m210
4

Ответ:

4P + 5O2 → 2P2O5 (O2 - избыток)

P2O5 + 3H2O → 2H3PO4 (Промышленный метод получения ортофосфорной кислоты.)

Объяснение:

mashaswedan: спасибо, но правильный ответ P2O5.
m1m210: так там и есть P2O5, см. реакцию №1
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