4. What happens to the temperature of the material
Share
4. What happens to the temperature of the material
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
Changes in heat can usually be detected as changes in temperature. Usually, when you add energy to a bunch of atoms they move faster and get hotter. ... For instance, when water is boiling, adding heat does not increase its temperature. This happens at the boiling temperature of every substance that can vaporize.
Explanation:
Hope its help
Pafollōw at pabrain liest na den slamatシ︎シ︎
Answer:
The change in temperature is
0
throughout a vertical phase transition (such as gas to liquid), but the change in pressure is
0
for a horizontal phase transition.
You can also perform a diagonal phase transition if you vary the pressure AND temperature.
Finally, if you land on exactly the boiling/melting point, and you keep the temperature AND pressure constant, a natural phase transition occurs, such as everyday boiling or melting.
In either case, you may find it useful that what we have is the Maxwell Relation
Δ
G
=
−
S
Δ
T
+
V
Δ
P
.
This means for constant-temperature (vertical) phase transitions (e.g. isothermal compression/expansion) in a closed system, we have for the Gibbs' free energy
Δ
G
trs
=
V
sys
Δ
P
sys
Or for constant-pressure (horizontal) phase transitions, we have
Δ
G
trs
=
−
S
sys
Δ
T
sys
Or, for constant-temperature, constant-pressure phase transitions (such as everyday boiling/melting), we have
Δ
G
trs
=
0
,
⇒
Δ
H
trs
=
T
sys
Δ
S
trs
Or, for a phase transition in which neither is constant (diagonal transition):
Δ
G
trs
=
−
S
sys
Δ
T
trs
+
V
sys
Δ
P
trs