2024-03-29T13:01:22Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02006677
2022-02-15T03:34:42Z
1642837622505:1642837937095:1642837938485
1642838403551:1642838406414
重クロム酸カリ水溶液に於ける解離度測定について : 熱力学的諸量の分光化学的研究(第1報)
Study on the degree of dissociation in Aqueous Solution of Potassium-bichromate -Study on Stochiometry in Thermodynamics by the method of Spectra-(1)
当馬, 嗣徳
石川, 順正
Toma, Shitoku
Ishikawa, Junsei
open access
Ultraviolet and visible absorption spectra were taken between 210 and 460 millimicrons in various pH solution (6X10^-5 mole/liter) of Potassium bichromate.Cr_2O^--_7+H_20=2HCrO^-_4 HCrO^-_4=H^++CrO^--_4 Then,in alkaline solution we can consider the next reaction. Cr20^--_7+H_2O = 2H^++2CrO^--_4 Hydrolysis on Cr_20^--_7depends upon pH Concentration and Temperature. When the curves calculated from the visible absorption spectra of potassiumbichromate,having a pH greater than 7.35 Coincided, the solution was considered to be lOO% dissociated.\nFrom theoretical calculation,the solution is 1OO% dissociated at pH greater than 6.99. Curves also coincided at pH blow 5.34, but in this case the solution was not dissociated.
紀要論文
琉球大学文理学部
Arts and Science Division, University of the Ryukyus
jpn
departmental bulletin paper
NA
http://hdl.handle.net/20.500.12000/22067
http://hdl.handle.net/20.500.12000/22067
https://u-ryukyu.repo.nii.ac.jp/records/2006677
0557577X
AN00250650
琉球大学文理学部紀要 理学篇
3
1
6
https://u-ryukyu.repo.nii.ac.jp/record/2006677/files/No3p001.pdf