Make up the reaction equation: C- CH4- CO2- BACO3- BA (NCO3).

1) C + 2H2 = CH4 (when carbon interacts with hydrogen, methane is formed);

2) CH4 + 2O2 = CO2 + 2H2O (when methane interacts with oxygen, carbon dioxide and water are formed);

3) CO2 + Ba (OH) 2 = BaCO3 + H2O (when carbon dioxide interacts with barium hydroxide, barium carbonate and water are formed);

4) BaCO3 + H2O + CO2 = Ba (HCO3) 2 (when barium carbonate interacts with water and carbon dioxide, barium bicarbonate is formed).



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