Using the uncorrected values based on Method B for ΔHº
and ΔSº in Table 2 (entry 2), determine
pK (= –log10 K) for the
reaction studied in this experiment at 293 K. Note the units of
these values carefully and do not use the ΔGº value shown
at 298 K, as it differs from the value at 293 K!
Enter your response to the nearest 0.01.
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Table 2. Thermodynamic Constants AH°/(kJ mol-') AS/(J mol-1 K-1) Method A, raw data (extracted from Figure 2) 36 27 Method B, raw data (extracted from Figure 2) 37 34 Method A, corrected student mean 36 30 Method B, corrected student mean 38 40 Method A, Figure 2 data, activity corrected 61 73 Method B, Figure 2 data, activity corrected 62 80 Method A, corrected student mean, activity corrected 65 90 . Method B, corrected student mean, activity corrected 67 100 Literature Values, Bjerrum et al. (9). Literature Values, Zeltmann et al. (10). 71.5 83.7
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