РЕШИТЬ ЗАДАНИЕ ПО ХИМИИ
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anisimanis
2
17.05.2020 17:58
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Объяснение:
Хімічний калейдоскоп
а) — 4)
б) — 5)
в) — 1)
г) — 2).
Виключи зайве
Завдання 1. В. HNO3- одноосновна
Завдання 2. Б. H2S - двоосновна
Завдання 3. А. H3PO4 - трьох основна.
Гонка за лідером
1) 2Ca+O2=2CaO
2) CaO+H2O=Ca(OH)2
3) 4P+5O2=2P2O5
4) P2O5+3H2O= 2H3PO4
5) 3Ca(OH)2+2H3PO4=Ca3(PO4)2+6H2O.