1) What is measured in Volts? a) how many electrons are passing through a system b) how many electrons per second are passing through a system c) difference in potential (pressure) of electrons passing through a system d) total power (ability to do work) of the electrical current 2) What are standard cell potentials, E cell? a) how many Volts this electrochemical cell should produce b) potential of the cell at standard conditions (298K, all aqueous concentrations are 1M, 1 atm.) c) whether the cell is oxidized or reduced d) how many Watts this electrochemical cell should produce 3) What is oxidation? a) oxidation is gain of electrons, oxidation number becomes more negative b) oxidation is gain of electrons, oxidation number becomes more positive c) oxidation is loss of electrons, oxidation number becomes more negative d) oxidation is loss of electrons, oxidation numbers become more positive

1) What is measured in Volts? a) how many electrons are passing through a system b) how many electrons per second are passing through a system c) difference in potential (pressure) of electrons passing through a system d) total power (ability to do work) of the electrical current 2) What are standard cell potentials, E cell? a) how many Volts this electrochemical cell should produce b) potential of the cell at standard conditions (298K, all aqueous concentrations are 1M, 1 atm.) c) whether the cell is oxidized or reduced d) how many Watts this electrochemical cell should produce 3) What is oxidation? a) oxidation is gain of electrons, oxidation number becomes more negative b) oxidation is gain of electrons, oxidation number becomes more positive c) oxidation is loss of electrons, oxidation number becomes more negative d) oxidation is loss of electrons, oxidation numbers become more positive

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter17: Electrochemistry

Section: Chapter Questions

Problem 21Q: When magnesium metal is added to a beaker of HCl(aq), a gas is produced. Knowing that magnesium is...

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When magnesium metal is added to a beaker of HCl(aq), a gas is produced. Knowing that magnesium is oxidized and that hydrogen is reduced, write the balanced equation for the reaction. How many electrons are transferred in the balanced equation? What quantity of useful work can be obtained when Mg is added directly to the beaker of HCl? How can you harness this reaction to do useful work?
9.23 Which system does not work: (a) E=436J , q=400J ; or E=317J , q=347J ?
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