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Kinetics of reaction between acetic acid and Ag 2+ in nitric acid medium
Author(s) -
GaoLiang Li,
Hui He,
Hongbin Tang,
Xiechun Liu,
Guoan Ye
Publication year - 2013
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.20742
Subject(s) - chemistry , nitric acid , acetic acid , ionic strength , activation energy , kinetics , nuclear chemistry , reaction rate , chemical kinetics , inorganic chemistry , catalysis , organic chemistry , aqueous solution , physics , quantum mechanics
The reaction kinetics between acetic acid and Ag 2+ in nitric acid medium is studied by spectrophotometry. The effects of concentrations of acetic acid (HAc), H + , NO − 3 , and temperature on the reaction are investigated. The rate equation has been determined to be –d c (Ag 2+ )/d t = kc (Ag 2+ ) c (HAc) c −1 (H + ), where k = (610 ± 15) (mol/L) −1 min −1 with an activation energy of about (48. 8 ± 3.5) kJ mol −1 when the reaction temperature is 25°C and the ionic strength is 4.0 mol L −1 . The reduction rate of Ag 2+ increases with the increase in HAc concentration and/or temperature and the decrease in HNO 3 concentration. However, the effect of NO − 3 concentrations within 0.5–2.5 mol L −1 on the reaction rate is negligible. © 2012 Wiley Periodicals, Inc. Int J Chem Kinet 45: 47–51, 2013