Low temperature heat capacities and thermodynamic functions of potassium dichromate
文献类型：期刊论文
| 作者 | Nan, ZD; Tan, ZC; Sun, LX |
| 刊名 | acta physico-chimica sinica
 |
| 出版日期 | 2002-10-01 |
| 卷号 | 18期号:10页码:947-951 |
| 关键词 | potassium dichromate (K2Cr2O7)) low-temperature heat capacity thermodynamic function adiabatic calorimetry |
| 英文摘要 | the molar heat capacities ( c-p,c-m) of crystalline potassium dichromate (k2cr2o7) were measured with a precision automated adiabatic calorimeter over the temperature range from 100 k to 390 k. no phase transition or other thermal anomaly was observed in this temperature region. however, it was found that the relationship of c-p,c-m with respect to temperature t is different in different temperature regions. the polynomial functions of c-p,c-m vs. t were established in different temperature regions based on the heat capacity measurements by means of the least-fitting square method. these functions are as following: for 100 k less than or equal to t less than or equal to 275 k, c-p,c-m = 0. 005 t-2 - 1.0320 t + 125. 22 (j . k-1 . mol (-1)); for 275 k less than or equal to t less than or equal to 350 k, c-p.m = 209. 37 j . k-1 . mol - 1; for 350 k less than or equal to t less than or equal to 390 k, c-p,c-m = 0. 0266t(2) - 18. 823t + 3542. 3 j . k-1 . mol (-1). according to the relationship of c-p,c-m vs. t and thermodynamic equations, the values of thermodynamic function of potassium dichromate were calculated in the temperature range of 298. 15 similar to 400. 15 k with 5 k intervals. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000178709800018 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139114]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Nan, ZD,Tan, ZC,Sun, LX. Low temperature heat capacities and thermodynamic functions of potassium dichromate[J]. acta physico-chimica sinica,2002,18(10):947-951. |
| APA | Nan, ZD,Tan, ZC,&Sun, LX.(2002).Low temperature heat capacities and thermodynamic functions of potassium dichromate.acta physico-chimica sinica,18(10),947-951. |
| MLA | Nan, ZD,et al."Low temperature heat capacities and thermodynamic functions of potassium dichromate".acta physico-chimica sinica 18.10(2002):947-951. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。