Problems. Show ail appropriate work to earn full credit. am 1.5 t 0.5 40 60 80 2

Question

Problems. Show ail appropriate work to earn full credit. am 1.5 t 0.5 40 60 80 20 Temperature( C) Refer to the following P vs T phase diagram. (2 points each) What phase(s) exist 0.51 atm & 60C 1.25 atm & 9.4 40"C & 0.50 atm at Give the name of the following phase changes when At 45°C, P increases from 0.5 atm to 1.07 atm At 1.00 atm, T increases from 10. to 41.2C At 0.25 atm, T increases from 9.0. to 61.8 Label on the phase diagram where the Triple Point is located? Label on the phase diagram where the Critical Point is located?

Explanation / Answer

Q1

a)

P = 0.51 atm, this is GAS, since it is in the lower/right quadrant

b)

P = 1.25 atm, this is a SOLID, since it is in the top/left quadrant

c)

This is between solid and liquid, exactly in the equilbirium line

Q2

a.

from 45°C --> gas to liquid --> name is condensation

b.

P = 1 atm, from 10 to 41.2

this is solid to liquid, its called fussion/melting

c.

0.25 atm --> from solid to gas, this is sublimation

Q3

triple point --> th epoint in which the 3 lines intersect

this is given approx at

P = 0.80 atm, T = 30°C

Q4

critical cpoint --> the point in which liquid/vpaor is not defined

so

P = 2.2 atm, T = 75°C approx

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