An Introduction to Thermodynamics phần 6 docx
An Introduction to Thermodynamics phần 6 docx
... important, for
example, in the storage of gasoline, which is a mixture of many
hydrocarbons. The storage tanks must be vented to the air and
consequently water vapor can condense in the tanks. ... constituents, on
the temperature, and on the pressure. Therefore the change in free energy arising from changes in
any of these quantities can be written as the sum
It is to be understood that e...
An Introduction to Thermodynamics phần 3 docx
... within thermodynamics of measuring an absolute energy, or an absolute
16
enthalpy. Only energy, and enthalpy, changes can be determined. However, knowing that these
energy and enthalpy changes ... after
mixing?
There is no energy advantage for the yellow grains to move to the bottom, or back to the
top, or to any other specific location. We know that, once mixed, there is clos...
An Introduction to Thermodynamics phần 5 docx
... ) and of ethane (C H ) at 25 C and
2 4 2 6
o
1 atm are 68 .4 and -32.0 kJ/mol. The standard enthalpies of formation are 52.4 and -84.0
kJ/mol. For the reduction of ethylene with H to give ethane,
2
... equations 36 and 37 for an adiabatic, reversible expansion of an ideal gas can be
put into the following forms:
a. TV V = constant, or T /T = (V /V ) V.
R/C R/C
1 2 2 1
b. PV = con...
An Introduction to Thermodynamics phần 1 pdf
... 1.0
2
H O,25g 82.2 66 .2 -7.8 0.125 1.0
2
Al, 50g 86. 35 66 .35 -3 .65 0.0050 0.22
Al, 25g 88.12 68 .12 -1.88 0.02 76 0.22
* Temperatures in C. ∆T is the temperature change of the sample and
o
s
∆T is the ... far, thermodynamics has
been shown to be correct.
Energy
The first step in understanding thermodynamics, and making it serve your purposes, is to
learn how to evaluate chang...
An Introduction to Thermodynamics phần 2 potx
... P dV is a change (in P and V, because P changes with V), so P dV is an
inexact differential. W is an amount, not a change in work or any other property, so it is at best
misleading to describe ... terminology can be an aid to
understanding. Careless terminology is a hindrance to understanding.
EQUATION OF STATE. Knowledge of two properties, or state functions, is generally suffici...
An Introduction to Thermodynamics phần 4 ppsx
... NH g -45.9 - 16. 4
3
C graphite 0 0 aq - 362 .5 -2 36. 5
CF g -933 .6( 639.9) 66 .2 NH Cl c -314.4 -202.9
4 4
CCl lq -139.3 -68 .6 N O g 81 .6 103.2
4 2
CO g -110.5 -137.2 NO g 91.3 87 .6
CO g -393.5 ... -100.4 - 96. 9 H O g -241.8 -228 .6
2
AgCl c -127.0 -109.8 lq -285.8 -237.1
AgI c -61 .8 -66 .2 H O g -187.8 -120.4
2 2
Ag O c -31.1 -11.2 lq -1 36. 3 -105 .6
2
Al O c - 167 5.7...
An Introduction to Thermodynamics phần 7 pot
... equilibrium
constant”) is rigorously constant!
7/10/07 4- 90
Equilibrium Constants
At equilibrium, under constant temperature and pressure, the free-energy change is zero and
equation 6 becomes
For any given ... Find the molality of the ethanol and acetone if water is considered to be the solvent.
c. Find the molality of the water and acetone if the ethanol is considered to be the solve...
An Introduction to Thermodynamics phần 8 pdf
... + e 6 Cu 0.153
+ ++ +
K + e 6 K -2.931 SO + 4 H + 2e 6
+ = +
4
Na + e 6 Na -2.71 H SO + H O 0.172
+
2 3 2
Mg + 2e 6 Mg -2.372 AgCl + e 6 Ag + Cl 0.22233
++ -
Al + 3e 6 Al -1 .66 2 Cu + 2e 6 Cu ... -
6 H C O (aq) -0.49 O + 2 H + 2e 6 H O 0 .69 5
2 2 4 2 2 2
+
Fe + 2e 6 Fe -0.447 Fe + e 6 Fe 0.771
++ +++ ++
Cr + 2e 6 Cr -0.407 Hg + 2e 6 2 Hg 0.7973
+++ ++ ++
2
Cd +...
An Introduction to Thermodynamics phần 9 ppsx
... 2 06. 6 SO g 248.2
2
H O g 188.83 CBr g 358.1
2 4
H O g 232.7 CCl g 309.4
2 2 4
H S g 205.8 lq 214.4
2
I c 1 16. 1 CF g 261 .6
2 4
g 260 .6 CH g 1 86. 3
4
K c 64 .7 C H g 200.9
2 2
KCl c 82 .6 C ... of
statistical mechanics, it is possible to predict which substances are likely to be “apparent
exceptions” to the third law and to calculate the exact amount of the discrepancy...
An Introduction to Thermodynamics phần 10 potx
... tortoise has moved 1 m.
Each time Achilles runs the distance to where the tortoise had been, the tortoise will have moved
to a new location, ahead of Achilles. Will Achilles ever catch the tortoise?
What ... geometrically by an area. The
second method may be called an antiderivative.
Area. In section A.3 we looked at the equation for an ideal gas to find how one quantity
changes...
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