ΔG(T) = -T/10 - 100 in ΔH<0, ΔS>0 quadrant: always spontaneous (T*<0)

Sympy-exact symbolic witness of the Gibbs-free-energy spontaneity criterion evaluated in the (ΔH<0, ΔS>0) quadrant. Setup: pick ΔH = −100 kJ/mol (exothermic) and ΔS = +0.1 kJ/(mol·K) (entropy-increasing — typical of gas-evolving…