Question

. Допишіть формули простих речовин у схемах реакцій:...+... – CaO;СО + ... - CO2.СРОЧНО​

Answer 1

Ответ:

1. 2Ca + O2 — 2CaO

Уравниваем в левой и правой части, ставя коэффициенты перед Са и СаО.

2. 2СО + О2 — 2СО2

Аналогично первому.

Answer 2

Simple Substances and Chemical Reactions

The formation of simple substances can be represented through chemical equations. Here are the chemical equations for the formation of CaO and CO2:

1. Formation of CaO: - The formation of calcium oxide (CaO) occurs through the reaction between calcium carbonate (CaCO3) and heat, resulting in the release of carbon dioxide (CO2). - The chemical equation for this reaction is: ``` CaCO3(s) → CaO(s) + CO2(g) ``` - This reaction represents the decomposition of calcium carbonate into calcium oxide and carbon dioxide.

2. Formation of CO2: - Carbon dioxide (CO2) is formed through various processes, including the combustion of carbon-containing compounds such as hydrocarbons or the decomposition of carbonates. - One example of the formation of carbon dioxide is through the combustion of carbon monoxide (CO) in the presence of oxygen (O2). - The chemical equation for this reaction is: ``` 2CO(g) + O2(g) → 2CO2(g) ``` - This reaction represents the oxidation of carbon monoxide to produce carbon dioxide.

These chemical equations illustrate the formation of simple substances, CaO and CO2, through specific chemical reactions.