Gravitational field and thermodynamics on chlorine monofluoride molecules

Consider a massive point-like body with mass M.
We arrange a lab A in circular orbit with radius r,
around M, and another lab B at circular orbit at radius
r' >> r. Our experiment's aim is to know how much
we can lower the temperature of a well-known subtance,
say chlorine monofluoride, firstly in lab A, and then
in lab B. Will we achieve the same low temperature
record for that specfiic substance in both labs?.
What theory could explain the phenomenon that we
achieved a lower emperature for chlorine monofluoride
at lab B than that at lab A?.

We know that Chlorine monofluoride is a colourless
gas at room temperatures, but when cooled about 173 K
it becomes liquid and exhibits a pale yellow colour. How
could we interpret any difference in colour or phase
transition at both labs for the same low temperature?.
If that phenomenon occurs, then there would be only a
unique explanation: That what we call absolute zero of
temperature could be achieved for any chemical subtance
only at a spatial region where gravitational field influences
can be neglected. The stronger the gravitational influence,
the more difficult to achieve a lower temperature towards
absolute zero. So, gravitational potentials would be impossing
important themodynamic constraints when we try to lower
the temperature of a body towards the absolute zero.

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