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11.2-11.3 - Cu2(aq Fe(s Cu(s Fe2(aq Why are e-s...

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1 Why are e-s spontaneously transferred from Fe to Cu 2+ ? Cu 2+ (aq) + Fe (s) Cu (s) + Fe 2+ (aq) Section 11.2 Spontaneous E Fe High lying occupied orbitals Donor orbital Reducing Agent Cu 2+ Low lying unfilled orbitals Acceptor orbital Oxidizing Agent Why aren’t e -s spontaneously transferred from Cu to Fe 2+ ? Cu 2+ + Fe Cu + Fe 2+ X Section 11.2 Nonspontaneous Cu Donor orbital Low lying Reducing Agent Fe 2+ E Acceptor orbital High lying Oxidizing Agent E Donor orbital Acceptor orbital Spontaneous High lying, filled Low lying, empty red.ag. Great ox.ag. Acceptor orbital Donor orbital E High lying, empty Low lying, filled Nonspontaneous ox.ag. Horrible red.ag. Section 11.2 Mg(s) + Pb 2+ (aq) Mg 2+ (aq) + Pb(s) The following reaction is spontaneous. Which species is being oxidized? ( Mg,Pb 2+ ,Mg 2+ ,Pb ) Which species is the oxidizing agent? ( Mg,Pb 2+ ,Mg 2+ ,Pb ) Section 11.2 E Before a b Mg(s) + Pb 2+ (aq) Mg 2+ (aq) + Pb(s) The following reaction is spontaneous. After c d In which box ( a or b ) are the electrons before the reaction occurs? Which orbital represents Mg 2+ ( a , b , c or d ). Which orbital represents Pb ( a , b , c or d ). Which orbital represents Pb 2+ ( a , b , c or d ). Mg Pb 2+ Mg 2+ Pb Section 11.2 V W Orbital E Lo Hi Given below are valence orbitals A) Best oxidizing agent? B) Best reducing agent? V W Section 11.2 V 2- W 2- V W V 2+ W 2+ V 2- W 2- V 2- W 2- V 2+ W 2+ V 2+ W 2+
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2 V 2- W 2- V W V 2+ W 2+ Orbital E Lo Hi Best oxidizing agent? Best one to be reduced One with the lowest unfilled orbital (i.e., gain e - ) Section 11.2 V 2- W 2- V W V 2+ W 2+ Orbital E Lo Hi Best reducing agent?
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