Misc Flashcards
Major resonance
prefers having the lowest formal charges on the atoms (so if there’s a molecule that’s all 0, that’s major!)
negative charges on the most electronegative atom
What type of work is happening when a system expands?
The system is doing work on the surroundings
What type of work is happening when the system contracts?
Work is done on the system by the surroundings
How do we know if a system expands/contracts?
Expands - more gas molecules on the right side of eqn
Contracts - more gas molecules on left side of eqn
What are conjugated pi bonds?
pi bonds in a system that has alternating single and double bonds
Diamagnetic
VSEPR (paired electrons, no single electron floating in the molecule)
MO (paired electrons, no single electron on a single line)
Paramagnetic
VSEPR, single unpaired electron on an atom
MO, single unpaired electron on a single line
How do you identify polar molecules?
Asymmetry
H-bonds (N, O, F)
General differences in EN
How do you identify nonpolar molecules
Symmetry
Diatomic molecules (N2, O2, Cl2, F2)
noble gases (He, Ne, Ar, Xe)
molecules containing just C and H
What does a 2s sigma bond look like?
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What does an anti 2s sigma bond look like?
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what does a 2p sigmabond look like?
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What does an anti 2p sigma bond look like?
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What does a 2p pi x bond look like?
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What does an anti 2p pi x bond look like?
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What are the two assumptions of coffee cup calorimetry?
1) the density of the solution involved is the same as the density of water
2) heat capacity of the solution is the same as the heat capacity of water
