Q&A on Purification Technology [023]
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This post was last edited by hai8487 on 2017-8-1 12:43 to briefly explain Raoult’s law. Answer: “At constant temperature and pressure, the vapor pressure of the solvent in a dilute solution is equal to the saturated vapor pressure of the pure solvent multiplied by the mole fraction of the solvent in the liquid phase.” ”This is Raoult’s law. In 2017, in the field of coal chemical industry: “My Technical Upgrades” (with generous rewards) http://bbs.hcbbs.com/thread-1786290-1-1.html; Event for registered chemical engineers – sharing experiences: “Learning from Others’ Experiences” http://bbs.hcbbs.com/thread-1808158-1-1.html
It can be expressed as: “At a certain temperature, the vapor pressure of a dilute solution of a poorly volatile non-electrolyte is equal to the saturated vapor pressure of the pure solvent multiplied by the mole fraction of the solvent.”
At a certain temperature, the vapor pressure of a dilute solution is equal to the vapor pressure of the pure solvent multiplied by the mole fraction of the solvent
At constant temperature and pressure, the vapor pressure of the solvent in a dilute solution is equal to the saturated vapor pressure of the pure solvent multiplied by the mole fraction of the solvent in the liquid phase.
"At constant temperature and pressure, the vapor pressure of a solvent in a dilute solution is equal to the saturated vapor pressure of the pure solvent multiplied by the mole fraction of the solvent in the liquid phase. " Mathematical expression: P1 = P10 * X1, where: P1 ----- vapor pressure of the solvent in a dilute solution ； P10----Saturated vapor pressure of the pure solvent at the same temperature ； X1-----Mole fraction of the solvent in the liquid phase ；
One of the fundamental laws of physical chemistry was discovered in 1887 by the French physicist F.-M. Raoult while studying the behavior of dilute solutions containing non-volatile solutes. It can be expressed as follows: “At a given temperature, the vapor pressure of a dilute solution is equal to the vapor pressure of the pure solvent multiplied by the mole fraction of the solvent.” Mathematical expression: PA = P * A * XA, where PA is the vapor pressure of the solvent in the solution ； P*A is the vapor pressure of the pure solvent ； XA is the mole fraction of the solvent.
At a certain temperature, the vapor pressure of a dilute solution of a poorly volatile non-electrolyte is equal to the saturated vapor pressure of the pure solvent multiplied by the mole fraction of the solvent
At a certain temperature, the vapor pressure of a dilute solution of a poorly volatile non-electrolyte is equal to the saturated vapor pressure of the pure solvent multiplied by the mole fraction of the solvent. Its mathematical expression is: p = p*nA/(nA + nB), where: p is the vapor pressure of the solution; p* is the vapor pressure of the pure solvent; nA is the amount of substance of the solvent; nB is the amount of substance of the solute
Raoult’s law: At a given temperature, the vapor pressure of a dilute solution is equal to the vapor pressure of the pure solvent multiplied by the mole fraction of the solvent.
Raoult’s law states that, at a constant temperature, the vapor pressure of the solvent in a dilute solution is equal to the vapor pressure of the pure solvent multiplied by the mole fraction of the solvent. Its mathematical expression is: pA = p × xA, where pA is the vapor pressure of the solvent in the solution ； p is the vapor pressure of the pure solvent ； xA is the mole fraction of the solvent.
Raoult’s law: At a given temperature, the vapor pressure of a dilute solution is equal to the vapor pressure of the pure solvent multiplied by the mole fraction of the solvent.