___________________________________________________________________________________A água é uma das substancias mais importantes do planeta. É composta por hidrogênio e oxigênio, ambos de grande importância química e para vida humana. Embora na literatura científica existam vários estudos sobre as propriedades físicas e químicas da água, muito ainda pode ser estudado sobre essa substância. Neste estudo, descreveremos as propriedades elétrica e dielétrica da água na fase líquida, assim como, a impedância, constante dielétrica, polarização molar e momento dipolo em função da frequência (1-20 kHz) na faixa de temperatura entre 288 e 314 K. As medidas de constante dielétrica e impedância foram realizadas com auxílio de um analisador de impedância. Ademais, foi utilizado um sistema capacitivo de placas paralelas, todo experimento foi blindado para minimizar os efeitos de interferência eletromagnética (ruído) e conectado ao aterramento da rede elétrica do laboratório. Os valores de momento de dipolo foram estimados aplicando a teoria de Kirkwood com base na definição de campo local de Onsager para líquidos polares. Palavras-chave:Propriedades elétrica e dielétrica, Polarização molar e momento de dipolo, Teoria de Kirkwood.Water is one of the most important substances on planet. It's constituted by hydrogen and oxygen elements, both of great importance chemistry and fundamental to human life. Although there are many studies about your physical and chemical properties in the scientific literature, much can be studied yet about this substance. In this study we report the electrical and dielectric properties of the water in liquid phase, such as impedance, dielectric permittivity and dipole moment as a function of frequency (1-20 kHz) in the temperature range between 288 and 314 K. The impedance and dielectric permittivity measurements were carried out in experimental apparatus equipped with an impedance analyzer. In addition, a capacitive system of parallel plate was and entire experiment was shielded to minimize electromagnetic interference effects (noise), and connected to the grounding of the laboratory electrical network. The dipole moment values were estimated applying the Kirkwood's theory based on the definition of Onsager's local field for polar liquids.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2025 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.