Thermodynamics, Homework 12
Due on Friday, November 20, 2015
Problem 12.1
Consider an A-B system that forms regular solutions in both the solid and the liquid
phase forms. Parameters for the heat of m
Homework 2
Name: Jiale Qiu
UFID:0794-9999
Problem 2.1
a) During the adiabatic free expansion,
U = Q + W + W = 0 + 0 + 0 = 0
Assuming an reversible isothermal expansion process of ideal gas which has
t
Homework 3
Name: Jiale Qiu
UFID:0794-9999
Problem 3.1
S = (
273 mC
p,ice
T
0
+(
dT
T
0
313 mC
p,water
T
0
263 mC
p,ice
dT
0
dT) + mS273
273 mC
p,water
0
T
dT)
= mCp,ice ln
273 mHmelting
313
+
+ mCp,
homework 1
Thermodynamics, Homework 1
Jie Zhou ID : 3969-4156
Due on Friday, September 4, 2015
Answer 1.1:
298.15K, 1 atm
a. Its a unary, homogeneous, open, nonreacting and simple system.
b. Its a una
Thermodynamics, Homework 2
Due on Friday, September 11, 2015
Problem 2.1
Consider a thermodynamic process performed on one mole of an ideal gas that
consists of two steps: First the gas is allowed to
Thermodynamics, Homework 14
Due on Monday, December 7, 2015
Problem 14.1
Consider a gas mixture at a high temperature with the following components:
H2, H2O, O2, SiO(g), SiH4, Si(g)
a)
b)
c)
d)
e)
Lis
Thermodynamics, Homework 7
Due on Friday, October 16, 2015
Problem 7.1
At a pressure of 1 atm, ice melts at 273.15 K. In addition, Hfusion = 6.009 kJ/mol,
the density of ice is 0.92 g/cm3 and the dens
Thermodynamics, Homework 13
Due on Friday, November 27, 2015
Problem 13.1
Find the critical temperature for the miscibility gap that will be found in a regular
solution with
!"# = ! ! [4850 ! + 12300
Homework 2
Thermodynamics, Homework 2
Jie, Zhou UFID: 3969-4156
Due on Friday, September 11, 2015
Problem 2.1
Consider a thermodynamic process performed on one mole of an ideal gas that consists
of tw
Thermodynamics, Homework 4
Due on Friday, September 25, 2015
Problem 4.1
A cylinder of 12 liters of argon gas at an initial pressure of 1 atm and temperature of
273 K is compressed to a volume of 6 li
Thermodynamics, Homework 9
Due on Friday, October 30, 2015
Problem 8.1
Given the volume change on mixing of a solution obeys the relation
2 cc
Vmix = 2.7X1 X 2
mol
a) Derive expressions for the pa
yms a b c t s;
%S=int(a/t+b+c/t^3)=b*t - c/(2*t^2) + a*log(t)
0or Ar
syms a b c t S S0;
t=298:5:1000;
a=20.785;
b=200;
c=0;
S0=54.8;
S=b*t - c./(2*t.^2) + a.*log(t)+S0;
syms a b c t H H0;
t=2
Equilibrium
Textbook Chapter 5
What We Know
Definition of Equilibrium from 2nd Law of Thermodynamics:
In an isolated system the equilibrium state is the state that has the
maximum value of entropy th
Thermodynamics, Homework 2
Due on Friday, September 11, 2015
Problem 2.1
Consider a thermodynamic process performed on one mole of an ideal gas that
consists of two steps: First the gas is allowed to
Thermodynamics, Homework 3
Due on Friday, September 18, 2015
Problem 3.1
For pure, crystalline compounds, the absolute entropies are calculated by using the
following formula
!
S298 =
298
0
CP
dT
T
Ho
Thermodynamics, Homework 5
Due on Friday, October 2, 2015
Problem 5.1
Which of the following statements are true in steady state (select all that apply)?
i.
ii.
iii.
iv.
v.
The system is in equilibriu
Thermodynamics, Homework 6
Due on Friday, October 9, 2015
Problem 6.1
In future chapters, we will frequently use the following expression for the entropy
(this is called the ideal solution model):
c
S
Homework 10
Problem 10.1
Consider a system with three components Cu, Ni, and Zn, that contains four phases, , , and L.
a) List the variables required to specify the state of each phase: count them.
b)
Homework 10
Name: Jiale Qiu
UFID:0794-9999
Problem 10.1
a)
state of : T, P, ,
state of : T, P, ,
state of : T, P, ,
state of L:T, P, ,
b)
Conditions for equilibrium of this system:
T = T = T = T
P
Homework 5
Name: Jiale Qiu
UFID:0794-9999
Problem 5.1
The definition for steady state is that thermodynamic variables do not change with time.
So, the following statements are in true steady state.
T
Homework 8
Name: Jiale Qiu
UFID:0794-9999
Problem 8.1
water =
V
ice
V
M
water
=
18g mol1
= 1.8 105 m3 /mol
1g/cm3 106
M
18g mol1
18
3
=
=
3 106 = 9.17 105 m /mol
ice 0.917g/cm
dP Sice water
=
dT V ice
Homework 6
Name: Jiale Qiu
UFID:0794-9999
Problem 6.1
The number of atoms in 1 mol atoms is N A, Xk is substituted by Xi to avoid the mixture
between Boltzmann constant k and the subscripts.
S = kln
=
Thermodynamics, Homework 10
Due on Saturday, November 7, 2015
Problem 10.1
Consider a system with three components Cu, Ni, and Zn, that contains four phases,
, , and L.
a) List the variables required
Thermodynamics, Homework 11
Due on Friday, November 13, 2015
Problem 11.1
Consider the following data for an isobaric binary phase diagram:
Melting point of A = 362C and of B = 242C
Eutectic tie lin
Thermodynamics, Homework 11
Due on Friday, November 13, 2015
Problem 11.1
a) In a binary system, what is the maximum number of phases that can exist in
equilibrium?
b) In a isobaric (constant pressure
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