How do you calculate partial molar quantities?
The partial molar volume of B is an intensive property that is a function of the composition of the mixture, as well as of T and p. The limiting value of VB as xB approaches 1 (pure B) is V∗m,B, the molar volume of pure B. We can see this by writing V=nBV∗m,B for pure B, giving us VB(xB=1)=(∂nBV∗m,B/∂nB)T,p,nA=V∗m,B.
What does Gibbs theory of partial molar property says?
The Gibbs theorem is based on the assumptions that all particles in an ideal mixture are self-contained and that the intensive thermodynamic state property of any component i in the mixture is defined solely by the system temperature T and the partial pressure of the component pi in the mixture.
Which are partial molar properties?
A partial molar property is a thermodynamic quantity which describes the variation of an extensive property of a solution or mixture with changes in the molar composition of the mixture at constant temperature and pressure.
What is a partial molar pregnancy?
In a partial or incomplete molar pregnancy, the mother’s chromosomes remain but the father provides two sets of chromosomes. As a result, the embryo has 69 chromosomes instead of 46. This most often occurs when two sperm fertilize an egg, resulting in an extra copy of the father’s genetic material.
How do you find molar volume of water?
At standard Temperature and Pressure (STP) the molar volume (Vm) is the volume occupied by one mole of a chemical element or a chemical compound. It can be calculated by dividing the molar mass (M) by mass density (ρ).
What is the significance of partial molar properties?
Partial molar properties are useful because chemical mixtures are often maintained at constant temperatureand pressure and under these conditions, the value of any extensive property can be obtained from its partial molar property.
What is meant by partial molar free energy?
In words, the partial molar free energy is the change in total free energy that occurs per mole of component i added, with all other components constant (at constant T and P). The chemical potential of i measures the change in free energy caused by adding more of species i to the system.
Are partial molar volumes always positive?
In general, partial molar volumes do not remain constant if the composition of the mixture changes. However, since V is a state function, the final equation should be valid no matter how the solution was prepared. While volumes are always positive, partial molar volumes need not be.
How common is a partial molar pregnancy?
Partial molar pregnancy with a live fetus is a very rare condition, occurring in 0.005 to 0.01% of all pregnancies; it presents a challenging diagnosis, especially when clinical signs are almost completely absent.