how many compounds make carbon dioxide and how it react?
Answers
Answer:
Carbon dioxide as a non-metallic oxide is acidic. Carbon dioxide reacts with water in a reversible reaction to form carbonic acid (H2CO3). The acid dissociation constant for carbonic acid Ka = 4.45 x 10-7 mol dm-3. This indicates that it is a much weaker acid than ethanoic acid which has a Ka = 1.74 x 10-5 mol dm-3.
Answer:
Although carbon is usually a reducing agent, under acidic conditions elemental carbon is a moderately strong oxidizing agent. The large energy of the carbon–carbon bond makes activation energy requirements for the reaction so high that direct reduction of carbon—e.g., to methane (formula CH4)—is impractical. Reduction of carbon monoxide to elemental carbon and oxidation of carbon monoxide to carbon dioxide are both feasible but impractical in solution. Under alkaline conditions, only the oxidation of formate ion (HCO2−) to carbonate ion (CO32−) is a reasonable process.