* *
* *
**

neopages network:homeinfoforumscontact
learnchem.net

*
*
navigation:
*
 home *
*
news
about us
contact us
search site
*
 tutorials *
*
index
submit tutorial
request tutorial
*
 organic chemistry *
*
index
important tables
reactions
*
 practice tests *
*
index
submit practice tests
request practice tests
*
 online quizzes *
*
index
chemistry olympiad test questions
submit quizzes
request quizzes
*
 reference tools *
*
constants
formulas
glossary
periodic table
si units/conversions
thermodynamic data
*

1. Which statement is FALSE?
DS increases as pressure decreases
for an ideal gas, enthalpy is not pressure-dependent
the lowest value of free energy occurs at equilibrium
DS increases as volume increases
all statements are true

2. For a reaction, the DS = -30J/K and DH=25kJ. Is this reaction spontaneous at STP?
no
yes
need more info
only at high pressures
only at low pressures

3. If an endorthermic reaction is spontaneous at 298 K, which of the following must be true for the reaction?
DG is greater than zero
DG is greater than zero
DG and DH are greater than zero
DH and DS are greater than zero
DG, DH, DS are all greater than zero

4. Which of the following favors a negative DG?
increasing energy and increasing entropy
lowering energy and increasing entropy
increasing energy and decreasing entropy
lowering energy and decreasing entropy
none of the above

5. The 3rd Law of Thermodynamics States that:
Energy is artificial
Energy can neither be created nor lost
The entropy of the universe is decreasing
The entropy is zero at zero K for a perfect crystal
none of the above

Name:
E-mail:


Last 15 Challengers
*

news | about us | contact us
tutorials index | organic chemistry | practice tests | online quizzes | reference tools
site copyright (c) 2002 to neopages.com

*
*
newsletter:
newsletter
*
*
*
neopages network:
*
network news:
*