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1 In a fuel cell, most of the chemical energy is converted to _____ energy. Students type their answers here
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If the calculated cell potential is _____, the reaction is spontaneous. positive negative c. neutral d. balanced 2 Students type their answers here
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3 The _____ the difference in potential energy between two electrodes, the larger the voltage. lesser greater c. balance of d. charge of Students type their answers here
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4 A _____ is a unit used to measure cell potential. Students type their answers here
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5 A/An _____ agent is a substance that has the potential to cause another substance to be reduced. reducing oxidizing c. chemical d. biological Students type their answers here
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6 Reduction involves the _____ of electrons. gain loss c. displacement d. bonding Students type their answers here
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7 Copper taking on a green patina is an example of a/an _____ reaction. chemical b. decomposition c. oxidation d. reduction Students type their answers here
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8 In fuel cells, _____ acts as a fuel. hydrogen b. lead c. oxygen d. zinc Students type their answers here
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9 The tendency of a substance to _____ electrons is its reduction potential. gain loss c. share d. express Students type their answers here
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10 A voltaic cell converts _____ energy to _____ energy. Students type their answers here
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11 The electrode where oxidation takes place is called the ___________. Students type their answers here
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12 Oxidation involves the _____ of electrons. gain b. loss c. displacement d. bonding Students type their answers here
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13 List the oxidation numbers for each element below. Identify the oxidized and reduced atoms in the following equation. Mg + I2 → MgI2 Students type their answers here
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14 Calculate the net change in oxidation number of chlorine in the following redox reaction. Cl2 + ZnI2 → ZnCl2 + I2 Students type their answers here
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15 List the oxidation numbers for each element below. Identify the oxidized and reduced atoms in the following equation. H2S + Cl2 → S + 2HCl Students type their answers here
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16 Calculate the standard cell potential, and determine if the reaction is spontaneous or not. Fe3+ + Co2+ → Fe2+ + Co3+
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17 Calculate the standard cell potential, and determine if the reaction is spontaneous or not. Fe3+ + Cu+ → Fe2+ + Cu2+ Students type their answers here
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Co2+ → Co3+ + e- Fe3+ + e- → Fe2+
18 For the following half-reactions, write a balanced equation for the overall cell reaction and calculate the standard cell potential. Co2+ → Co3+ + e- Fe3+ + e- → Fe2+
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