Because the R2 values varied, so did the Kobs per concentration (see Table I). Within the author’s case, two graphs were plotted as one point was further out on the graph (see Figure 5). With Figure 5, the first three points were more aligned and showed a linear relationship, while the last point, which corresponded to 0.0262 M NaOH served as an outlier. The author decided to take out the last point and generated a new graph (see Figure 6), which generated a more linear graph and resulted in a higher R2 of 0.9892. This caused a debate between what the reaction order was with respect to OH- as Figure 5 had a slope closer to 1, while Figure 6 had a slope closer to 2 (see Figures 5 and 6). Since the data point in Figure 5 was an outlier, this suggested error (the solution was shaken too many times; crystal violet was a really dark purple) as the first three data points formed a linear relationship. Therefore, based on the R2 value, Figure 6 was used to determine the reaction order with respect to OH-; second
Because the R2 values varied, so did the Kobs per concentration (see Table I). Within the author’s case, two graphs were plotted as one point was further out on the graph (see Figure 5). With Figure 5, the first three points were more aligned and showed a linear relationship, while the last point, which corresponded to 0.0262 M NaOH served as an outlier. The author decided to take out the last point and generated a new graph (see Figure 6), which generated a more linear graph and resulted in a higher R2 of 0.9892. This caused a debate between what the reaction order was with respect to OH- as Figure 5 had a slope closer to 1, while Figure 6 had a slope closer to 2 (see Figures 5 and 6). Since the data point in Figure 5 was an outlier, this suggested error (the solution was shaken too many times; crystal violet was a really dark purple) as the first three data points formed a linear relationship. Therefore, based on the R2 value, Figure 6 was used to determine the reaction order with respect to OH-; second