Question

Вариант 6 Расставьте коэффициенты в приведенных ниже схемах химических реакций, определите тип реакции. 1) Na+Cl2→NaCl 2) H2S+O2→S+H2O 3) Zn+HCl→ZnCl2+H2 4) Al+O2→Al2O3 5) C+H2→CH4

Answer 1

Ответ:

1. 2Na+Cl2= 2NaCl соединение
2. 2H2S+O2=2S+2H20 замещение
3. Zn+2HCl=ZnCl2+H2 замещение
4. 4Al+3O2=2Al2O3 соединение
5. C+2H2=CH4 соединение

Answer 2

1) Na + Cl2 → NaCl

The given chemical equation represents the reaction between sodium (Na) and chlorine gas (Cl2) to form sodium chloride (NaCl). This is a combination reaction where two or more substances combine to form a single product.

2) H2S + O2 → S + H2O

The given chemical equation represents the reaction between hydrogen sulfide (H2S) and oxygen gas (O2) to form sulfur (S) and water (H2O). This is a decomposition reaction where a single compound breaks down into two or more simpler substances.

3) Zn + HCl → ZnCl2 + H2

The given chemical equation represents the reaction between zinc (Zn) and hydrochloric acid (HCl) to form zinc chloride (ZnCl2) and hydrogen gas (H2). This is a single replacement reaction where one element replaces another element in a compound.

4) Al + O2 → Al2O3

The given chemical equation represents the reaction between aluminum (Al) and oxygen gas (O2) to form aluminum oxide (Al2O3). This is a combination reaction where two or more substances combine to form a single product.

5) C + H2 → CH4

The given chemical equation represents the reaction between carbon (C) and hydrogen gas (H2) to form methane (CH4). This is a combination reaction where two or more substances combine to form a single product.

Please note that the coefficients in the chemical equations represent the stoichiometric ratios between the reactants and products. These coefficients are used to balance the equation and ensure that the law of conservation of mass is obeyed.