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Iron objects corrode when exposed to water and oxygen, but not when they are kept dry. Aluminum objects do not appear to corrode under either of these conditions. Which of the following best explains these observations? Iron is more reactive because it is paramagnetic, whereas aluminum is diamagnetic. Iron is a metal but aluminum is a semiconductor. When a metal is heated, cations vibrate and interfere with the electron movement. When a semiconductor is heated, more electrons are freed to move through the lattice. Iron is a metal but aluminum is a semiconductor. Metals consist of cations in a sea of mobile electrons that can carry current. Semiconductors have a few mobile electrons. Aluminum is a better Lewis acid than iron is, so it is more likely to gain electrons (get reduced) than to lose electrons (get oxidized) Iron corrodes because of an electrochemical reaction that requires H2O and 02. Aluminum forms a thin oxide coating that prevents further reaction.

Iron objects corrode when exposed to water and oxygen, but not when they are kept dry. Aluminum objects do not appear to corrode under either of these conditions. Which of the following best explains these observations? Iron is more reactive because it is paramagnetic, whereas aluminum is diamagnetic. Iron is a metal but aluminum is a semiconductor. When a metal is heated, cations vibrate and interfere with the electron movement. When a semiconductor is heated, more electrons are freed to move through the lattice. Iron is a metal but aluminum is a semiconductor. Metals consist of cations in a sea of mobile electrons that can carry current. Semiconductors have a few mobile electrons. Aluminum is a better Lewis acid than iron is, so it is more likely to gain electrons (get reduced) than to lose electrons (get oxidized) Iron corrodes because of an electrochemical reaction that requires H2O and 02. Aluminum forms a thin oxide coating that prevents further reaction.

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 22E: The mass of three different metal electrodes, each from a different galvanic cell, were determined...
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Iron objects corrode when exposed to water and oxygen, but not 18. when they are kept dry. Aluminum objects do not appear to corrode under either of these conditions. Which of the following best explains these observations? Iron is more reactive because it is paramagnetic, whereas aluminum is diamagnetic. Iron is a metal but aluminum is a semiconductor. When a metal is heated, cations vibrate and interfere with the electron movement. When a semiconductor is heated, more electrons are freed to move through the lattice. Iron is a metal but aluminum is a semiconductor. Metals consist of cations in a sea of mobile electrons that can carry current. Semiconductors have a few mobile electrons. Aluminum is a better Lewis acid than iron is, so it is more likely to gain electrons (get reduced) than to lose electrons (get oxidized) Iron corrodes because of an electrochemical reaction that requires H2O and 02. Aluminum forms a thin oxide coating that prevents further reaction.
Transcribed Image Text:Iron objects corrode when exposed to water and oxygen, but not 18. when they are kept dry. Aluminum objects do not appear to corrode under either of these conditions. Which of the following best explains these observations? Iron is more reactive because it is paramagnetic, whereas aluminum is diamagnetic. Iron is a metal but aluminum is a semiconductor. When a metal is heated, cations vibrate and interfere with the electron movement. When a semiconductor is heated, more electrons are freed to move through the lattice. Iron is a metal but aluminum is a semiconductor. Metals consist of cations in a sea of mobile electrons that can carry current. Semiconductors have a few mobile electrons. Aluminum is a better Lewis acid than iron is, so it is more likely to gain electrons (get reduced) than to lose electrons (get oxidized) Iron corrodes because of an electrochemical reaction that requires H2O and 02. Aluminum forms a thin oxide coating that prevents further reaction.
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