Name ______________________________
Secret Identity/Code ________________________________
(so I can post scores anonymously)
Approximate number of hours/week spent on homework __________
(for survey purposes, if you don’t mind)
Instructions:
You may use one page of notes. Please label & circle your answers.
Show your
work
, where appropriate! There are 100 total points.
Helpful Information
:
R = 8.31 J/kgK
0ºC = 273K
(16 pts)
Problem 1
: Multiple choice conceptual questions.
Circle
the letter of the most correct
answer.
Box
the letter of your second choice, for half credit if your circle is wrong.
1.1.
Do the Celsius and Fahrenheit temperature scales ever read the same?
a.
No, never.
b.
Only at some pressures.
c.
Only at some specific volumes.
d.
Yes, at absolute zero.
e.
Yes, at some other temperature.
1.2.
Assuming the volume of an ideal gas is increasing from V
1
to V
2
, in which type of
process is there the greatest change in entropy?
a.
adiabatic
b.
isothermal
c.
isobaric (constant pressure)
d.
all three are equal
e.
not enough information given
1.3.
What is
∆
S of an ideal gas for an
irreversible
change in which both endpoints
which coincidentally lie on an isotherm?
a.
0
b.
something smaller than
nR
ln(
V
2
/
V
1
), but not zero.
c.
nR
ln(
V
2
/
V
1
)
d.
something larger than
nR
ln(
V
2
/
V
1
)
e.
It cannot be determined from the information given.
Thermo Exam 1 – pg 1

This
** preview**
has intentionally

**sections.**

*blurred***to view the full version.**

*Sign up*
This is the end of the preview. Sign up
to
access the rest of the document.