Explain the two solids and a solvent - phase diagram, Chemistry

Assignment Help:

Explain the Two solids and a solvent - Phase Diagram?

The phase diagram in Figure on the next page is for a ternary system of water and two salts with an ion in common. There is a one-phase area for solution, labeled sln; a pair of two-phase areas in which the phases are a single solid salt and the saturated solution; and a triangular three-phase area. The upper vertex of the three-phase area, the eutonic point, represents the composition of solution saturated with respect to both salts. Some representative tie lines are drawn in the two-phase areas.

1810_Two solids and a solvent.png

Figure: Ternary phase diagram for NaCl, KCl, and water at 25 C and 1 bar. The dashed lines are tie lines in the two-phase areas.

A system of three components and three phases has two degrees of freedom; at fixed values of T and p, each phase must have a fixed composition. The fixed compositions of the phases that are present when the system point falls in the three-phase area are the compositions at the three vertices of the inner triangle: solid NaCl, solid KCl, and solution of the eutonic composition xNaCl = 0.20 and xKCl = 0.11. From the position of the curved boundary that separates the one-phase solution area from the two-phase area for solution and solid KCl, we can see that adding NaCl to the saturated solution of KCl decreases the mole fraction of KCl in the saturated solution. Al- though it is not obvious in the phase diagram, adding KCl to a saturated solution of NaCl decreases the mole fraction of NaCl.


Related Discussions:- Explain the two solids and a solvent - phase diagram

Melting point, how can the melting point be used to determine the purity of...

how can the melting point be used to determine the purity of organic compounds

What was the resulting color and approximate ph of solution, Why were you a...

Why were you able to observe electrolysis in the cabbage juice indicator solution before any vinegar was added to this solution, while no electrolysis was observed in distilled wat

Titration, how is back titration graphs drawn

how is back titration graphs drawn

Evaportion, Evaporation theory and describe advantages, disadvantages and a...

Evaporation theory and describe advantages, disadvantages and application?

S block elements, how does solvation of alkali ions occur

how does solvation of alkali ions occur

Experiment of an air oven, An air oven A large tin can is used as an a...

An air oven A large tin can is used as an air oven. A hole through the lid fitted with a cork holds a thermo- meter, and the saucer or dish rests on a wire gauze bridge placed

Sodium aluminates is a better coagulates then alum, Q.   why is sodium alum...

Q.   why is sodium aluminates is a better coagulates then ferrous sulphates or alum? Ans. Sodium aluminates (NaAlO 2 ): It is better coagulant than FeSO 4 and alum because i

Solutions, what volume in milliliters of 12.00M nitric acid (HNO3) stock so...

what volume in milliliters of 12.00M nitric acid (HNO3) stock solution would you us to make 750.0 ml of 3.00M nitric acid solution what volume in milliliters of 12.00M nitric acid

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd