Solubilities of 4-hydroxybenzaldehyde, 3-bromo-4-hydroxybenzaldehyde, 3,5 -dibromo-4-hydroxybenzaldehyde in chloroform were measured at temperatures ranging from 283.15 K to 323.15 K.The measurements of temperature an...Solubilities of 4-hydroxybenzaldehyde, 3-bromo-4-hydroxybenzaldehyde, 3,5 -dibromo-4-hydroxybenzaldehyde in chloroform were measured at temperatures ranging from 283.15 K to 323.15 K.The measurements of temperature and enthalpy of fusion of pure solutes were used for caculation of solubility by ideal solution model,which was higher than the experimental values.The very low solubility in chloroform was due to self association of solute molecules.A λh formula was used to fit the data and had shown good correlation results.展开更多
Solid liquid equilibrium data for three binary systems: 4 hydroxybenzaldehyde/3 bromo 4 hydroxybenzaldehyde,4 hydroxybenzaldehyde/3,5 dibromo 4 hydroxybenzaldehyde,3 bromo 4 hydroxy benzaldehyde/3,5 dibromo 4 hydroxyb...Solid liquid equilibrium data for three binary systems: 4 hydroxybenzaldehyde/3 bromo 4 hydroxybenzaldehyde,4 hydroxybenzaldehyde/3,5 dibromo 4 hydroxybenzaldehyde,3 bromo 4 hydroxy benzaldehyde/3,5 dibromo 4 hydroxybenzaldehyde were determined by differential scanning calorimetry and corresponding phase diagrams were given λh equation and Wilson equation were used to correlate the data It was shown that the results obtained by two models were both展开更多
文摘Solubilities of 4-hydroxybenzaldehyde, 3-bromo-4-hydroxybenzaldehyde, 3,5 -dibromo-4-hydroxybenzaldehyde in chloroform were measured at temperatures ranging from 283.15 K to 323.15 K.The measurements of temperature and enthalpy of fusion of pure solutes were used for caculation of solubility by ideal solution model,which was higher than the experimental values.The very low solubility in chloroform was due to self association of solute molecules.A λh formula was used to fit the data and had shown good correlation results.
文摘Solid liquid equilibrium data for three binary systems: 4 hydroxybenzaldehyde/3 bromo 4 hydroxybenzaldehyde,4 hydroxybenzaldehyde/3,5 dibromo 4 hydroxybenzaldehyde,3 bromo 4 hydroxy benzaldehyde/3,5 dibromo 4 hydroxybenzaldehyde were determined by differential scanning calorimetry and corresponding phase diagrams were given λh equation and Wilson equation were used to correlate the data It was shown that the results obtained by two models were both
