序号 | 盐 | 熔点/℃ | 熔化热/ | 参考价格/ |
① | CaCl2·6H2O | 29.0 | 37.3 | 780~850 |
② | Na2SO4·10H2O | 32.4 | 77.0 | 800~900 |
③ | Na2HPO4·12H2O | 36.1 | 100.1 | 1800~2400 |
④ | Na2SiO3·5H2O | 52.5 | 49.7 | 1400~1800 |
A.-386 kJ·mol-1 | B.+386 kJ·mol-1 |
C.-746 kJ·mol-1 | D.+746 kJ·mol-1 |
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