Scientia Sinica

68 SCIENTIA SINICA Vol. V

Table 1 Solubilities and Activity Coefficients of »-Valeric Acid in Aqueous Cobalt-ammine Solutions at 25°C

a

Cobalt-ammine Cs S S./S=f log f | 1/f 0.0034 37.42 1.0003 0.0001 0.9997 0.0068 37.34 1.0024 | 0.0011 0.9976 FREER 0.0114 37.33 1.0027 | 0.0012 0,9973 | 0.0190 37.25 1,0048 | 0.0021 0.9952 | | 0.0046 37.39 1.0011 | 0.0005 0.9989 © | 0.0077 37.29 1.0038 | 0.0016 0.9963 0.0128 37.27 | 1,0043 | 0.0019 | 0.9957 0.0143 37.30 1.0035 | 0.0015 0.9965 Croceo | 0.0213 37.01 1.0114 0.0049 0.9888 0.0239 | 37.19 1.0065 0.0028 |. 0.9936 0.0355 36.91 1.0141 | 0.0061 | 0.9861 0.0399 36.91 1.0141 0.0061 0.9861 0.0163 37.04 1.0105 0.0046 0.9896 0.0325 36.63 1.0218 0.0094 0.9786 Xantho 0.0541 36,20 1.0340 0.0145 0.9671 0.0904 | 35.39 1.0577 0.0243 0.9455 0.0027 37.34 1.0024 | 0.0011 | 0.9976 0.0054 | 37.25 1.0048 0.0021 0.9952 0.0108 37.05 1.0103 0.0044 0.9899 0.0180 36.85 1.0157 0.0068 0.9845 Tite 0.0299 36.53 1.0246 0.0106 0.9760 0.0499 35.99 1.0400 0.0170 0.9615 0.0831 35.22 1.0628 0.0264 0.9410 0.1388 33.60 1.1140 | 0.0469 | 0.8977 0.0116 37.33 1.0027 0.0012 0.9973 0.0199 - 37.19 1.0064 0.0028 0.9936 0.0323 37.10 1.0089 0.0039 0.9912 Flavo 0.0539 36.82 1.0166 0.0071 0.9837 0.0898 36.52 1.0249 0.0107 0.9757 0.1495 35.87 1.0435 0.0185 0.9583

From columns 2 and 3 in Table 1, we get Fig. 1. According to Eq. (2), if log f is plotted vs. C,, the result should be a straight line. Such plot is made in Fig. 2. According to Eq. (4), if 1/f is plotted vs. C,, the result should also be a straight line. Such plot is made in Fig. 3.