Why do you believe this will
occur at 2,000 degrees Fahrenheit?
Certainly at some temperature
-- energy level that is -- those bonds will be disturbed and
vibrating enough to break the atoms apart.
At that break-apart
temperature, there will be carbon and oxygen atoms moving
freely and no remaining carbon dioxide.
Then the oxygen, having been
given all that energy, will be trying very hard to join up
with some other atom or molecule to form a more stable
At some equilibrium
temperature that combining will take occur and carbon
dioxide will be the product. If held at that temperature in
our closed system, we would observe the break down and
re-combination processes going on as long as the temperature
was maintained steady.