Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 870-24-6, Name is 2-Chloroethanamine hydrochloride, molecular formula is , belongs to chlorides-buliding-blocks compound. In a document, author is Salanci, Eva, COA of Formula: C2H7Cl2N.
Determination of the critical micelle concentration and thermodynamic parameters of phenylcarbamic acid derivatives using a fluorescence method
Critical micelle concentration (CMC) values of 1-[3-(2-alkoxyphenylcarbamoyloxy)-2-hydroxypropyl]-4-(4-fluorophenyl)piperazin-1-ium-chlorides (alkoxy = methoxy to propoxy; 6a-c) were determined by a fluorescence method using pyrene as a probe over a temperature interval T = 293.15-313.15 K. The dependence of CMC on T turned out forming the U-shape. The curve was drawn by fitting of observed values using a second-degree polynomial function and so-called power-law equation, minimum of the curve was observed at T = 298.15 K. Thermodynamic parameters of micellization, i.e., molar Gibbs energy (Delta G degrees), enthalpy (Delta H degrees), and entropy (Delta S degrees), respectively, were calculated according to a phase separation model. Following the observations, the enthalpy (Delta H degrees) and entropy contributions (-T Delta S degrees) to the molar Gibbs energy (Delta G degrees) were calculated. It was found that contribution of enthalpy increased with the increase in temperature, and entropy contribution decreased within chosen range of the temperature. Finally, the enthalpy-entropy compensation and the compensation temperature (T-c) were determined.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 870-24-6, in my other articles. COA of Formula: C2H7Cl2N.