编辑: liubingb | 2019-07-04 |
1 1 1000g 4.184 J g K (273.15K 298.15K)
0 ? ? 解得末态未熔化的冰 解得末态未熔化的冰
2 (s) 216.17g m = 熔化的冰 熔化的冰 (500 216.17) g 283.83 g m = ? = 经估算 经估算 s
2 s fus l
2 (H O, s)(273.15K 263.15K) ? (H O, l)(273.15K 298.15K) p p m c m h m c ? + > ? fu s f f
1 l s f l ? ? (s ) (s ) ln (l) (l) ln p p m h T T S m c m c T T T = + +
1 273.15 283.83 333.3 273.15
500 2.000ln
1000 4.184ln J K 263.15 273.15 298.15 ? * ? ? ? ? ? ?
1 =17.21 J K? ? 末态未熔化的冰 末态未熔化的冰
2 (s) 216.17g m = 熔化的冰 熔化的冰 (500 216.17) g 283.83 g m = ? =