Thus, we can evaluate p m , and we have Q ′ from the rate law. Lastly, we need G ′ , which we will approximate by using the difference between G m and the G values we evaluated from the experimental data (G t ). We found G m > G t , so we will use the red data series (in S5), as we saw that the first few points were decreasing in G, and we will use the first one or two to estimate the slope (with a linear or quadratic approximation).