If one assumes constant enthalpy of activation, constant entropy of activation, and constant transmission coefficient, this equation can be used as follows: A certain chemical reaction is performed at different temperatures and the reaction rate is determined. The plot of ln ⁡ ⁡ ( k / T ) versus 1 / T gives a straight line with slope − − Δ Δ H ‡ ‡ / R from which the enthalpy of activation can be derived and with intercept ln ⁡ ⁡ ( κ κ k B / h ) + Δ Δ S ‡ ‡ / R from which the entropy of activation is derived.