aiven the phase diagram of a hypothetical substance, answer the following questi

Question

aiven the phase diagram of a hypothetical substance, answer the following questions (a) Indicate the phases at points X, Y, Z, A and B (b) As 7. you move from E to C, what phase changes happens to the substance. (C) As you move from C to D, indicate what transformations can occur to the substance. As from F to E, what are all the changes happens to the substance (O What is the name of tie line AB in the ph ase diagram? Name the phases of the substance on the tie line AB (g) Above point B, how many phase are present? (h) How many phases are there at the point A? ) When a line is drawn across (perpendicular to x-axis), the line will ntersect at two points. Show them on the diagram and describe the phase that can take place at each of the intersecting point Pressure atm) 150 1%, Temperature (C)

Explanation / Answer

7. In the above shown phase diagram,

(a) phases present at,

X = solid

Y = liquid

Z = gas

A = solid, liquid, gas

B = liquif, gas

(b) From E to C, this is fusion, solid goes to liquid phase

(c) From C to B, vaporization, liquid goes to gas phase

(d) From F to E, deposition of gas to solid phase occurs

(f) AB line is heating curve. The line has gas and liquid phases on it.

(g) Above point B only gas phase is present

(h) Point A is triple point and all three solid, liquid and gas phase are present here.

(i) When a perpendicular line is drawn, going from bottom to top, first intersect is gas to solid phase is deposiiton, second intersect is liquid to gas phase that is vaporization.

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