The ease of transmission of stabilising factors to the TS would thus be modulated by θ: higher values would lead to a TS more responsive to the factors that stabilise the minima. Conceptually, this would represent the information about the reaction hitherto usually ascribed to the Brønsted slope. For the thermoneutral identity reaction in A (a set of isodromic reactions, so Eeq = 0), the forward and backward barriers are the same and inversely proportional to k as can be derived from Equation :