4) What is wrong about this figure? It is a P-V diagram of a pure substance (10

Question

4) What is wrong about this figure? It is a P-V diagram of a pure substance (10 pts) cridial pint Cka) inrie in velune,ourt pressure as well. Pare velume that i in Hhat sulstase shou ast S) This is the Gibbs phase rule corresponding to a single component system. F=1+2-P 5 What is F? What is P? Explain the meaning of this equation using a P-T diagram of water. Remember that water expands upon solidification when you draw your P-T diagram of water. (15 pts) F is ferce ndrressure. 15 With Wto, wa he Jompastue rises, h pressure inortes which is hun what Causes the woter to boil. Thu aised, he more pressure ut ill be built

Explanation / Answer

question 1]

In the phase diagram, at the left-hand side of the bell curve, liquid phase exists which is incompressible.

Therefore, for a large increase in pressure, the volume increase will be still low but the given diagram shows a different picture and hence is wrong.

While tracing the line ( Isotherm ) from left to right, when the point exists on the curve then it implies that liquid has become saturated and begins to boil at constant pressure as shown in the figure with an increase in the volume.

The liquid in the bell curve is in a mixed phase.

At the right-hand side on the bell curve, complete vapor exists.

Now, when pressure is decreased. volume increases as shown in the figure.

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