Question

Расставьте коэффициенты в приведённых схемах реакций. Укажите типы химических реакций. 1) CH4->C+H2 2)CuCI+Mg->MgCI+Cu 3) KCIO3->KCI+O2 4) Mg+O2->MgO 5) Fe+HCI->FeCI2+H2 6) BaCO3->BaO+CO2 7) CO+O2->CO2

Answer 1

I will try to answer your question in detail. Here are the coefficients and types of chemical reactions for the given schemes:

1) CH4 -> C + H2 This is a reaction of decomposition of methane into carbon and hydrogen. The coefficients are: 2CH4 -> C + 4H2.

2) CuCl + Mg -> MgCl + Cu This is a reaction of displacement of copper by magnesium in copper chloride. The coefficients are: CuCl2 + Mg -> MgCl2 + Cu.

3) KClO3 -> KCl + O2 This is a reaction of decomposition of potassium chlorate into potassium chloride and oxygen. The coefficients are: 2KClO3 -> 2KCl + 3O2.

4) Mg + O2 -> MgO This is a reaction of combination of magnesium and oxygen to form magnesium oxide. The coefficients are: 2Mg + O2 -> 2MgO.

5) Fe + HCl -> FeCl2 + H2 This is a reaction of displacement of hydrogen by iron in hydrochloric acid. The coefficients are: Fe + 2HCl -> FeCl2 + H2.

6) BaCO3 -> BaO + CO2 This is a reaction of decomposition of barium carbonate into barium oxide and carbon dioxide. The coefficients are: BaCO3 -> BaO + CO2.

7) CO + O2 -> CO2 This is a reaction of combination of carbon monoxide and oxygen to form carbon dioxide. The coefficients are: 2CO + O2 -> 2CO2.