* *
* *
**

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. For a 2nd order rate law, the plot of wchich of these gives a straight line:
rate vs. concentration time vs. concentration [A] vs. time ln[A] vs. time 1/[A] vs. time

2. At 50.C reaction A has a rate constant of 2.3 L/mol*s, but at 60.C the rate constant is 4.5L/mol*s. Find its activation energy Ea
2.4 x 104 J/mol 1.6 x104 J/mol 6.0x104 J/mol 6.0x106 J/mol 1.6 x103 J/mol

3. A + B + C --> products is:
unimolecular trimolecular bimolecular 2nd-order tetramolecular

4. Which statement concerning a catalyst is TRUE:
Catalyst raises the activation energy Enzymes are not catalysts Catalyst speeds up a reaction In a reaction the catalyst is usually consumed Catalyst increased the cost of production

5. The rate law for reaction A is: rate=k[A]2. When [A] was 2.0 molar, the reaction was found to be 3.0x10-3 mol/L*s. Determine the rate constant.
7.5x10-4 7.5x10-3 1.5x10-3 1.5x10-4 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:
*