How does formic acid (under basic conditions) convert to CO2?

In summary, under basic conditions, formic acid converts to CO2 through a process of deprotonation and subsequent reactions with hydroxide ions. Basic conditions are necessary for efficient conversion, although formic acid can also react with oxygen to produce CO2 and water in the presence of a catalyst. Other products formed during the conversion include water and bicarbonate. The reaction is reversible with the addition of a strong acid.
  • #1
ldv1452
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What is the mechanism that results in formic acid quickly converting to CO2. I know this happens under basic conditions so I'm assuming the first step is forming the formate ion.
 
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  • #2
Best mechanism I can come up with is as follows:

-Hydroxide deprotonates formic acid to form formate ion and water molecule.
-Lone pair from oxygen migrates to form a C=O double bond. Simultaneously, the C-H bond breaks and the electron pair deprotonates a water molecule, reforming hydroxide and yielding the products: CO2 and H2.
 

1. How does formic acid convert to CO2 under basic conditions?

Under basic conditions, formic acid undergoes a process known as deprotonation, where it loses a proton and forms a negatively charged formate ion. This formate ion then reacts with hydroxide ions (OH-) to form bicarbonate (HCO3-) which then decomposes to form carbon dioxide (CO2).

2. What is the role of basic conditions in the conversion of formic acid to CO2?

Basic conditions provide the necessary hydroxide ions for the deprotonation of formic acid and subsequent formation of bicarbonate. Without basic conditions, the reaction would not occur efficiently.

3. Can formic acid convert to CO2 without basic conditions?

Yes, formic acid can undergo a reaction with oxygen (O2) to form carbon dioxide (CO2) and water (H2O) in the presence of a catalyst. However, this reaction is not as efficient as the deprotonation process under basic conditions.

4. What other products are formed during the conversion of formic acid to CO2?

In addition to carbon dioxide, water and bicarbonate are also formed during the conversion of formic acid to CO2 under basic conditions.

5. Is the conversion of formic acid to CO2 a reversible reaction?

Yes, the reaction can be reversed by adding a strong acid, such as hydrochloric acid (HCl), which will protonate the bicarbonate and form formic acid again.

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