Structure
Thermodynamics
Coulombs Law
Acid & base
Surprise!
100
What bonds and/or forces of attraction are broken when solid CO2 sublimates?
What are LDFs?
100
Methane is mixed with oxygen. Nothing happens until a spark is lit, at which point a combustion reaction occurs. Why does the reaction not proceed unless there is a spark?
What is, the activation energy is too high?
100
Which has the higher lattice energy, NaCl or LiCl?
What is LiCl?
100
Eli needs to know if a sample is HCOOH or CH3COOH. When titrated with a strong base, the pH at the half equivalence point is 4.7. What is the sample?
What is CH3COOH?
What is, let Eli figure it out himself?
100
A solution that you can add a bit of strong acid or strong base to without the pH changing much.
What is a buffer?
200
Which of the following is most polar?
ClBr, CO2, SO3, ClI
What is ClI?
200
The solubility of urea (below) increases as temperature is increased. Is the dissolution endothermic or exothermic? 
What is an endothermic reaction?
200
This is the PES for the 1s electrons of S2- and Ar. What is peak Q?
what is S2-?
200
10.0mL of a weak acid is titrated with 0.0875M NaOH. What is the molarity of the weak acid?
What is 0.125M?
200
This is urea. It's solubility in water, and the reason why.
What is very soluble, because it can make 4 H-bonds, and has 3 sites (O and both Ns) where it can accept H-bonds
300
What compound does element Q, above, make with oxygen?
What is plus or minus QO2?
300
What is the magnitude of k, the equilibrium constant, for a reaction at 298K with deltaH=56kJ/mol and deltaS=80J/molK
What is k is less than 1, but more than zero?
300
Which of the following has the strongest force of attraction to water?
What is Al3+?
300
What is 4%?
300
The entropy change for the dissolution of urea in water is 70.1J/molK @ 25oC. What is the absolute molar entropy of aqueous urea?
What is 174.7 J/MolK
400
What is the hybridization of Carbon in urea (above)
what is sp2
400
What is 410kJ?
400
Which is bigger, F- or Ne, and why?
What is F-, because Ne has a greater nuclear charge leading to a greater force of attraction between the nucleus and valence electrons. This decreases the radius.
400
Is a solution of NH4Cl acidic, neutral or basic?
What is acidic?
400
The element that is reduced in this reaction. 
What is Xe?
500
Which structure is more likely for NOCl and why?
What is the left one, because it has a formal charge of zero.
500
What temperature and pressure conditions maximize the yield of Xe?
What is low temperature and low pressure?
500
Which is bigger F or F-, and why?
What is F-, because repulsion between electrons in the valence shell of F- are larger than those of F.
500
Which of the following has the strongest conjugate acid?
What is Aniline?
500
The cathode side of this galvanic cell.
What is the silver side?