Gibbs
ΔH
NRG
Kinetics
Potpourri
100
Name any of the Bee Gees
Maurice, Barry, Robin
100
The heat of formation (ΔHf) of an element
Zero, nada, zilch
100
Reactions that give off heat/NRG are….
Exothermic
100
Can agitation speed up a reaction? WHY?
Yes. More collisions
100
Aristotle describing matter.
Four phases, earth/wind/fire/water
200
Estimate the sign of ΔS knowing these things about the reaction.
Look for changes in phase and or number of particles (moles)
200
To determine the heat of reaction (ΔHrx), we can use _______ or look up ΔHf for the compounds in the equation
Hess's Law
200
Heat flows from _________ to ______
Hot to Cold
200
Besides enough NRG, this must also be true for two molecules to react.
Correct orientation.
200
Equal at equilibrium....
forward and reverse rates
300
Free Energy (ΔG) of a system at equilibrium
Zero, nada, nothing
300
Endothermic or exothermic reaction? Why?
Endothermic
300
Temperature is defined as…
Average Kinetic NRG
300
What is the rate order for HI?
2
300
If you can’t Helium or Curium you must…
Barium
400
A reaction with a positive enthalpy change and negative entropy change is (never/always/depends on…) spontaneous
Never
400
ΔHrx for any combustion
Exothermic
400
Energy to melt an iceberg > Energy in 5 gallons of boiling water
Indeed
400
What are the units on k in this equation?
M-1 s-1
400
“chemical speed bump” (source, G.Hudson, since 1999)
Activation NRG
500
Enthalpy and Entropy trend in the universe
Enthalpy tends to decrease and Entropy tends to increase
500
Calculate the heat of reaction.
-233 kJ
500
Is Hell endothermic or exothermic? Explain
1) If Hell is expanding at a slower rate than the rate at which souls enter Hell, then the temperature and pressure in Hell will increase until all Hell breaks loose.
2) Of course, if Hell is expanding at a rate faster than the increase of souls in Hell, then the temperature and pressure will drop until Hell freezes over.
500
True or false: The rate order of a chemical reaction is the same as the coefficient in a balanced chemical equation
FALSE! Only by experimenting
500
This is a Plain Chachalaca. Who is it's cousin?
The Boom Chachalaca