Table 1.
Single temperature or unspecified temperature values for KH for HCN
| KH, M/atm | t, °C | pHCN, ppmv | Ref | Comments |
|---|---|---|---|---|
| 13.3 | 18 | 138,000 | 8 | Based on the lowest concentration data in this tabulation |
| 9.3 | 25 | 197,000 | 9 | Value extrapolated from above data |
| 8.8–9.6 | ? | ? | 10 | Secondary compilation, no sources are cited |
| 7.5 | ? | ? | 11 | Stated to be effective constant at pH 4, no sources cited |
| 8.7 | 25 | 100 | 12 | Value given in atm/mole fraction, extrapolated to infinite dilution |
| 8.2–8.8 | 25 | 100 | 12,13 | As for previous entry, data from (12), interpreted by authors of (13) |
| 8.8 | ? | 1500 | 13 | As for previous entry, this paper has different values in a table than in text, tabulated values are given here; this result is for a pure cyanide solution |
| 8.4–9.8 | ? | 2190–4150 | 13 | As for previous entry, results for a cyanide bearing synthetic leaching solution |
| 10.5–11.6 | ? | 2020–3030 | 13 | As for previous entry, results for a cyanide based actual zinc leaching solution |
| 13.7 | ? | ? | 1 | Reference 1 cites this as from ref. 14, we were unable to locate this in ref. 14. |
| 12 | 25 | ? | 15 | Secondary source, cites Edwards et al. (1978) that contains no primary data |
| 12.2 | 20 | 2–40 | 16 | Electronically published MS thesis |
| 12.8 | 25 | 318–376 | 17 | |
| 9.4 | ? | ? | 18 | Review, primary source not given |
| 11.9 | 30 | 825 | 19 | As interpreted in (16) |
| 7.6 | 25 | 21 | 20 | Static measurement of headspace by GC. Author suggests that static techniques produce lower KH values |