Предмет: Химия, автор: sokolenkoekaterina58

За наведеними схемами запишіть хiмiчнi рiвняння та вкажіть серед них рівняння окисно- відновних реакцій. А. Zn+Н3РО4- Б. К2O+H2SiO3- B.CaCO3- г. Cl2+02-​

Приложения:

Ответы

Автор ответа: emirbekovemir27
1

Ответ:

А. 3Са+2Н3PO4-->Ca3(PO4)2+3H2↑

или

Ca+H3PO4-->CaHPO4+H2↑

или

Ca+2H3PO4-->Ca(H2PO4)2+H2↑

Б. СаО+H2SO4-->CaSO4↓H2O

В. СаСО3-->СаО+СО2↑ (t)

Г. N2+3H2-->2NH3 (t, p)

Окислительно-восстановительные: А, Г.

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