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12 Cards in this Set
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isoelectronic species
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atoms and ions with the same number of electrons
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Find atomic weight of unknown element Z.
Na2Z2O3 is 156 g/mol |
Na- 23 g/mol
O- 16 g/mol (23*2)+(16*3)+2Z=156 Z- 31 g/mol |
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NH3 (aq) + HCL (aq) =
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NH4Cl
acid-base rxn |
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BaCO3 (s) + HCL (aq) =
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H2O (l) + CO2 (g) + Ba 2+ (aq)
gas forming |
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NaF (aq) + Ba(NO3)2 (aq) =
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BaF2 (s) + Na(NO3) (aq)
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Lewis structures- XeF4
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You add a nonbonding electron domain when there are unshared electron pairs. The element Xenon has 8 valence electrons and 4 fluorines take 4 electrons. The number of electrons remaining is 4, this gives two nonbonding domains and the electronic geometry is octahedral.
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enthalpy of formation and free energy
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G= H - TS
Goose Hunters Take shotguns. |
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redox rxns
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OILRIG
oxidation is loss reduction is gain |
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activation energy for a reverse reaction
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bigger than the activation energy and in the opposite sign
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miscibility
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like dissolves like
determined by polarity, not density |
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Galvanic cells
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anode is negative
cathode is positive |
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Electrolytic cells
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anode is positive
cathode is negative |
