合成氨平衡：实测与计算
1923–1924 年在铁催化剂上测得的 3 : 1 氢氮混合气平衡氨含量，与本站由 NIST 热力学数据按理想气体算出的值并列。
| 325 | 10 | 10.38 | 11.13 | −0.75 |
|---|---|---|---|---|
| 350 | 10 | 7.35 | 7.89 | −0.54 |
| 375 | 10 | 5.25 | 5.63 | −0.38 |
| 400 | 10 | 3.85 | 4.06 | −0.21 |
| 425 | 10 | 2.80 | 2.97 | −0.17 |
| 450 | 10 | 2.04 | 2.20 | −0.16 |
| 475 | 10 | 1.61 | 1.66 | −0.05 |
| 500 | 10 | 1.20 | 1.27 | −0.07 |
| 350 | 30 | 17.80 | 18.52 | −0.72 |
| 375 | 30 | 13.35 | 14.02 | −0.67 |
| 400 | 30 | 10.09 | 10.58 | −0.49 |
| 425 | 30 | 7.59 | 8.01 | −0.42 |
| 450 | 30 | 5.80 | 6.10 | −0.30 |
| 475 | 30 | 4.53 | 4.68 | −0.15 |
| 500 | 30 | 3.48 | 3.63 | −0.15 |
| 350 | 50 | 25.11 | 25.68 | −0.57 |
| 375 | 50 | 19.44 | 20.15 | −0.71 |
| 400 | 50 | 15.11 | 15.68 | −0.57 |
| 425 | 50 | 11.71 | 12.17 | −0.46 |
| 450 | 50 | 9.17 | 9.45 | −0.28 |
| 500 | 50 | 5.58 | 5.78 | −0.20 |
| 375 | 100 | 30.95 | 30.52 | 0.43 |
| 400 | 100 | 24.91 | 24.89 | 0.02 |
| 425 | 100 | 20.23 | 20.13 | 0.10 |
| 450 | 100 | 16.35 | 16.19 | 0.16 |
| 475 | 100 | 12.98 | 12.99 | −0.01 |
| 500 | 100 | 10.40 | 10.44 | −0.04 |
| 450 | 300 | 35.50 | 31.98 | 3.52 |
| 475 | 300 | 31.00 | 27.25 | 3.75 |
| 500 | 300 | 26.20 | 23.09 | 3.11 |
| 450 | 600 | 53.60 | 43.75 | 9.85 |
| 475 | 600 | 47.50 | 38.70 | 8.80 |
| 500 | 600 | 42.10 | 34.00 | 8.10 |
| 450 | 1000 | 69.40 | 52.34 | 17.06 |
| 475 | 1000 | 63.50 | 47.43 | 16.07 |
100 atm 以下两者相差不到 1 个百分点；更高压强下实测值更高，因为高压下的氨偏离理想气体（逸度系数小于 1）。