过氧化钙制备实验中氨水的用量分析
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钱林平,李进之,郑耿锋,沈建中
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Investigation of Ammonia Usage in the Experiments of Calcium Peroxide Preparation
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Linping QIAN,Jinzhi LI,Gengfeng ZHENG,Jianzhong SHEN
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| 表2 NH3存在条件下CaCl2与H2O2反应的热力学参数 |
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| T/K | ΔH/(kJ·mol-1) | ΔS/(kJ·mol-1) | ΔG/(kJ·mol-1) | K? | | 273 | -46.6 | -65.3 | -28.8 | 3.87 × 105 | | 373 | -57.7 | -99.9 | -20.4 | 7.89 × 102 | | 473 | -60.6 | -108.5 | -9.4 | 1.13 × 101 | | 573 | -78.7 | -143.0 | 3.1 | 5.11 × 10-1 | | 673 | -104.6 | -184.1 | 19.4 | 2.95 × 10-2 | | 773 | -143.0 | -237.1 | 40.4 | 1.70 × 10-3 | | 873 | -199.4 | -305.6 | 67.4 | 8.07 × 10-5 | | 973 | -279.3 | -392 | 102.1 | 2.72 × 10-6 | | 1073 | -388.1 | -498.2 | 146.4 | 5.78 × 10-8 | | 1173 | -531.5 | -625.5 | 202.4 | 7.02 × 10-10 | | 1273 | -714.4 | -775 | 272.2 | 4.52 × 10-12 |
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