Term
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Definition
intermolecular force between two Ionic molecules
ex. Na+Cl- |
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| ontermolecular force between ion & polar molecule |
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| intermolecular forces between polar molecule & polar molecule |
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| intermolecular forces between polar molecule & non-polar molecule |
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Exist for all species (polar or non-polar) but only become significant only when all other forces do not exist
The strength of london force depends upon the size (or molecular weight) of the species.
Bigger/Heavy=Stronger Force |
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| Bond strength order from strongest to weakest. |
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Definition
1) H group bonds
2)dipole-dipole
3)London Forces
4) molercular weight |
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| Vaporization of a liquid is dependant on what? |
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Definition
TEMPERATURE!
↑ liquid temp= ↑ vaporization rate
↑ surface area=↑ vaporization rate
↓ strength of intermolecular forces=↑ vaporization rate
ΔHvap in kJ/mole
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Term
| Suppose for H2O @ 25°c is 44kJ/mole. how much heat is needed to vaporise 36mL of H2O? |
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Definition
* What is being vaporised?
*mL→g
*g→mole
*mole→kJ
(36mLH2O)(1gH2O/1mLH2O)(1moleH2O/18gH2O)(44kJ/1mole)=88kJ |
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Term
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Definition
sort of super dipole-dipole force.
Hydrogen bonds strongly with F, O, and, N |
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| Vapor pressure and dynamic equilibrium |
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Definition
when a system in dynamic equilibrium is disturbed, the system responds so as to minimize the disturbance and return to a state of equilibrium!
Dynamic equilibrium: Rate of evaporation=Rate of condensation |
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[image]
8 corners+ 6 faces |
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Definition
[image]
8 corners+ 1 body |
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Term
| What makes a good electrical conductor? |
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Definition
A) you must have charge... think ions
B) Ions must be free to move |
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| WHy are metals good conductors? |
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Definition
| they do not hold onto there electrons very strongly allowing them to move freely |
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| half life- the time required for the concentration of a reactant to fall to one half of its initial value. |
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| are biological catalysts thats increase the rates of biological reactions |
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