Retrieving "Ceiling Temperature" from the archives

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  1. Polymerization

    Linked via "ceiling temperature"

    $$\Delta Gp = \Delta Hp - T \Delta S_p$$
    For polymerization to occur spontaneously, $\Delta Gp$ must be negative. Since chain growth generally leads to a reduction in the entropy ($\Delta Sp < 0$) of the system (fewer free molecules), there is a ceiling temperature ($T_c$) above which the reaction becomes thermodynamically unfavorable, even if kinetically fast.
    $$Tc = \frac{\Delta Hp}{\Delta S_p}$$