Exam 10: Energy From Electron Transfer

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Utilizing the half-cell potential information provided in Table 10.1, what can you say about the following two half reactions? Br2(l) + 2e- 2 Br -(aq) Potential = 1.09 V F2(g) + 2e- 2 F -(aq) Potential = 2.87 V

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Static electricity is able to build up on the surface of your skin just by friction, particularly in dry climates or winter-time. Which statement best describes the potential energy and electrical properties of a static electricity discharge?

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There are many fuel cell systems, but one of the more commonly studied is the Hydrogen/Oxygen fuel-cell, the two half reactions of which are shown below. Reaction A 2 H2 + 4 OH- -----> 4 H2O + 4 e- Reaction B O2 + 2 H2O + 4 e- -----> 4 OH - Which reaction takes place at the cathode?

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Which trait of nonmetals in their native state makes them more likely to serve as reducing agents?

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Combustion and cellular respiration are similar because they both ______ .

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For a spontaneous electrochemical reaction to occur, what criteria need to be met?

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Determine the oxidation state of the metal below: FeO

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Which of the following class of elements is most likely to serve as a reductant?

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Utilizing the half-cell potential information provided in Table 10.1, what can you say about the following two half reactions? Mg+2(aq) + 2e- Mg(s) Potential = -2.38 V Cu+2(aq) + 2e- Cu(s) Potential = +0.34 V

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For the following reaction involving the smelting of iron ore, the oxygen in the iron (III) oxide in the starting materials __________ . 2 Fe2O3(s) + 3 C(s) 4 Fe(l) + 3 CO2 (g)

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For the following reaction involving the smelting of iron ore, the iron (III) oxide in the starting materials __________ . 2 Fe2O3(s) + 3 C(s) 4 Fe(l) + 3 CO2 (g)

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For a compound that readily reacts with water to form anions you would expect _________ .

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The reducing agent will cause other things to _________ .

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In the tarnishing of silver, what is the most likely oxidant that causes the blackening of silver as it tarnishes?

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In solar cells, the p-n junction allows _________ .

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Determine the oxidation state of the nonmetal below: FeCl3

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A positive cell potential means that the reaction __________ .

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In a p-type semiconductor, conceptually, how is the charge carried in the material?

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Which of the following is not directly tied to the amperage of a photovoltaic device?

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What is the behavior of an anti-oxidant?

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