Question

CH4→СO2→Na2CO3→CaCO3

Answer 1

Ответ:

Ответ на фотографии.....................

Answer 2

The series of chemical reactions you've mentioned describes the transformation of methane (CH4) into sodium carbonate (Na2CO3) and finally into calcium carbonate (CaCO3). Let's break down each step of the process:

1. CH4 (methane) reacts with oxygen (O2) in the presence of a catalyst or heat to produce carbon dioxide (CO2) and water (H2O). The balanced equation for this reaction is:

   CH4 + 2O2 -> CO2 + 2H2O

2. Carbon dioxide (CO2) can react with sodium hydroxide (NaOH) to form sodium carbonate (Na2CO3). This process is known as the Solvay process. The balanced equation for this reaction is:

   CO2 + 2NaOH -> Na2CO3 + H2O

3. Sodium carbonate (Na2CO3) can then react with calcium chloride (CaCl2) to yield calcium carbonate (CaCO3) and sodium chloride (NaCl). The balanced equation for this reaction is:

   Na2CO3 + CaCl2 -> CaCO3 + 2NaCl

Overall, the complete series of reactions starting with methane and ending with calcium carbonate can be represented as:

CH4 + 2O2 -> CO2 + 2H2O CO2 + 2NaOH -> Na2CO3 + H2O Na2CO3 + CaCl2 -> CaCO3 + 2NaCl