Experimental study on the excess molar enthalpy of binary liquid solutions containing 1-pentanol + acetonitrile and 1-hexanol + acetonitrile at different temperatures and atmospheric pressure and correlation of data using PFP and ERAS models / Estudo experimental da entalpia molar em excesso de soluções liquidas binarias contendo 1-pentanol ou 1-hexanol e acetonitrila a diferentes temperaturas e pressão atmosferica e correlação atraves dos modelos PFP e ERAS

AUTOR(ES)

Alessandro Cazonatto Galvão

DATA DE PUBLICAÇÃO

2005

RESUMO

This work is focused on the experimental study of the excess molar enthalpy as a functions of composition of binary liquid solutions containing 1-pentanol + acetonitrile and 1- hexanol + acetonitrile for 288,15, 298,15, 313,15 and 323,15K and atmospheric pressure. The excess molar enthalpy was calculated using colorimetric method. To accomplish this purpose the starting point was calculated using calorimetric method. To accomplish this purpose, the starting point was the experimental measure of the thermal effect that arises when a mixture of two pure components take place. This solution models PFP and ERAS were applied with the attempt of correlating the experimental data. All the studied system showed values of excess molar enthalpy increase with the temperature and with the number of carbons in the alkanol chain. Both models, ERAS and PFP, were able to describe the main features of the solutions and to correlate the experimental data of the excess molar enthalpy. Some concepts of molecular forces were applied as an attempt of analyzing the behaviour of the experimental data and the mathematical models

ASSUNTO(S)

modelling and simulation modelagem de dados - termodinamica thermodinamic entalpia enthalpy

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