𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The molar heat capacity of hydrous copper chloride: atacamite Cu2Cl(OH)3

✍ Scribed by Mira R. Bisengalieva; Irina A. Kiseleva; Lyubov V. Melchakova; Lyubov P. Ogorodova; Alla M. Gurevich

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
218 KB
Volume
29
Category
Article
ISSN
0021-9614

No coin nor oath required. For personal study only.

✦ Synopsis

The heat capacity of natural atacamite has been measured between T = 2 K and T = 305 K by cryogenic-adiabatic calorimetry. At T = 298.15 K, the standard molar heat capacity C°p,m and entropy S°m for atacamite are (19.16 2 0.07)•R and (20.18 2 0.08)•R (where R = 8.3144 J•K -1 •mol -1 ), respectively. The heat capacity exibits anomalous behaviour at temperatures lower than 10.5 K. Smoothed thermodynamic properties: molar heat capacity; molar entropy increment D T 0 S°m; and (F°m + D T 0 H°m/T), where T = 298.15 K, have been calculated. Between T = 290 K and T = 508 K the heat capacity of atacamite measured by d.s.c. is represented by the equation: C°p,m/R = 18.80 + 8.11•10 -3 •(T/K) -1.87•10 -5 •(K/T ) 2 .

📜 SIMILAR VOLUMES

Excess molar enthalpies and excess molar
Excess molar enthalpies and excess molar heat capacities of [xCF3CH2OH + (1-x){HCON(CH3)2 or CH3CN}] at the temperature 298.15 K
✍ Shoji Miyanaga; Kaoru Chubachi; Masanori Nakamura; Katsutoshi Tamura; Sachio Mur 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 140 KB

Excess molar enthalpies \(H_{\mathrm{m}}^{\mathrm{E}}\) and excess molar heat capacities \(C_{\rho, \mathrm{m}}^{\mathrm{E}}\) of \(\left[x \mathrm{CF}_{3} \mathrm{CH}_{2} \mathrm{OH}+\right.\) \((1-x)\left\{\mathrm{HCON}\left(\mathrm{CH}_{3}\right)_{2}\right.\) or \(\left.\left.\mathrm{CH}_{3} \mat