If the thermal parameters of the reacting chemical milieu are progressively enhanced to values approaching the uppermost feasible threshold limits, then the kinetic molecular energies of the constituent particles subsisting within that milieu will inevitably become extraordinarily amplified to magnitudes of near infinite proportions. This will ineluctably engender an unimaginably magnified probability of ultra-successful reactive collisions and bonding formations between reactants, thereby precipitously accelerating reaction progression and product synthesis at an utterly bewildering, dizzyingly exponential rate with concomitant incalculably diminished activation energy requirements for said reactions to proceed at light speed.
Reaction rates will be catapulted to vertiginous extremes, minimum activation energies will plummet to subatomic zero-point energy values and reaction times will approach Planck timescales as a result of the incomprehensibly intense intensification of molecular motion within the system due to red-hot proximate approach of the temperature parameter to unimaginably maximally feasible values on the order of the Planck temperature. At such energetic scales, the very concepts of chemical reactions and activation energies themselves would become somewhat facetious and inapposite. Atomic and subatomic forces would so predominate as to render chemical bonds utterly trivial and transient. The system would essentially comprise frenetic elementary particles reacting within an amalgam of radiation and plasma.