If the Activation Energy of a chemical reaction is 10kJ and the Delta H for the reaction is is -10kJ, then what is the energy needed for the reverse process?
20kJ
100
What is a State Function?
A function that relates the products to the reactants in a chemical equation to find the change in a specific value.
100
If Ted were to set you on fire (at 298K), give me the signs of Delta H, S, and G as you burn.
What is the Enthalpy of a reaction at 298K, where its spontaneity can be measured in 2000J& has an Enthalpy change of 2J/K?
1404J/mol
200
If Delta G is negative, is the process spontaneous or non-spontaneous?
Spontaneous
200
A flamethrower releases x J of heat. Assuming a dude absorbs all the heat, how much heat will be transfered?
-x J
200
What is the amount of energy released when you burn Hexane?
Info:
C-C=348kJ/mol
C-H=413kJ/mol
O-O=125kJ/mol
C=O=614kJ/mol
O-H=366kJ/mol
1990kJ/mol
200
What is the C of Hydromethyl Jeopardine if it takes 10J to raise the temp. by 5 Degrees, and the mass of the sample is 5g?
0.4J/gK
300
What is the SI unit for Entropy?
J/K (joules per kelvin)
300
Is the Delta G positive or negative for a process that releases heat, but becomes much more ordered?
Delta G is positive
300
What are the properties of a substance with 0 Entropy?
A perfectly crystalline substance at 0K
300
Describe Hess's Law
H of the products - H of the reactants= Delta H
300
How many food calories are in a substance that has just enough energy to boil 100g of water starting at 298K?
75 food calories
400
What is the energy (in calories) that it takes to heat 50mL of water from 20 Degrees to 50 Degrees Celcius?
1500 Calories
400
What is the Gibbs equation for calculating the Free Energy in an equilibrium?
Delta G= -RT ln(Keq)
400
What is the temp. of a system after equal volumes of air at 100K & 50K are added to it (assuming no heat is lost)
75K
400
What is the Gibbs Free Energy for the products in a reaction (at 298K) where the reactants has a Delta G of 10kJ/mol, and the Enthalpy of the reaction is 10kJ/mol; with a Delta S of 2000J/mol?
-576kJ/mol
400
Assuming that a human dies when subjected to 200 Degrees F, how many calories would it take to raise 100L water (at 298K) to a deadly temp?
541,111.111 calories
500
What is equation for Enthalpy that is considered 'impractical' to use?
H=q+pV
500
At 298K, an equilibrium has a Delta G of -4950 J. What is the % moles of the reactants in the system?
33%
500
A synthesis reaction is exothermic and has a Delta H of -20, then what is the bond energy of the products if the bond energies of the reactants was 25kJ/mol?
5kJ/mol
500
The Enthalpy of the products in a reaction is 10J/mol and the Enthalpy of the reactants is 30J/mol. The Gibbs Free Energy of the products is equal to the reactants. What is the Entropy of the system at 200K?
0.1J/K
500
What is the Entropy of a 1 mole system, if the Boltsman constant for each molecule is 6.02*10^23, and there are 100 microstates?