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NY Regents Chemistry Electrochemical Series — practice questions

Explore 17 free Electrochemical Series questions in NY Regents Chemistry Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Electrochemical Series questions and exercises with answers

Showing questions 1–17 of 17.

A species is oxidized during a redox reaction. What has happened to it?Read the answer and worked solution →One ampere of electric current equals what rate of charge flow?Read the answer and worked solution →Iron(II) is converted to iron(III) during a redox reaction. What role does the iron(II) play?Read the answer and worked solution →Manganese moves from the 7+ state in permanganate to the 2+ state. How many electrons does each manganese center gain?Read the answer and worked solution →What does a galvanic cell do?Read the answer and worked solution →At which electrode of an electrochemical cell does reduction take place?Read the answer and worked solution →The salt bridge is lifted out of a working galvanic cell. What happens to the current?Read the answer and worked solution →In standard cell notation, what is recorded on the far left?Read the answer and worked solution →Why is platinum a common choice for an electrode that takes no part in the reaction?Read the answer and worked solution →A cell has a silver cathode at 0.80 V and a copper anode at 0.34 V. What is the standard cell potential?Read the answer and worked solution →A half-reaction is multiplied by three so the electrons balance. What happens to its standard reduction potential?Read the answer and worked solution →A cell pairs a gold half-cell at plus 1.498 V with a nickel half-cell at minus 0.257 V. What is the standard cell potential?Read the answer and worked solution →What separates a primary battery from a secondary battery?Read the answer and worked solution →A lead acid car battery is built from cells that each produce 2 V. How many cells give the usual 12 V?Read the answer and worked solution →A galvanized iron sheet is scratched right down to the bare iron. What still protects the iron?Read the answer and worked solution →Water is electrolyzed and both gases are collected. How do the two volumes compare?Read the answer and worked solution →A current of 10.23 A flows through a silver plating cell for exactly one hour. How many moles of electrons pass through?Read the answer and worked solution →

Worked practice questions

A species is oxidized during a redox reaction. What has happened to it?

  1. It has gained electrons
  2. It has gained protons
  3. It has lost protons
  4. It has lost electrons
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Correct answer: D. It has lost electrons

1. Oxidation and reduction are defined by the movement of electrons. 2. Oxidation is the loss of electrons, so the oxidized species gives electrons away. 3. Reduction is the opposite, a gain of electrons. 4. Protons sit in the nucleus and do not move during a redox reaction. _Source: OpenStax Chemistry (CC BY 4.0), Chs 7 and 17, section 17.1 Balancing Oxidation-Reduction Reactions_

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One ampere of electric current equals what rate of charge flow?

  1. One joule per second
  2. One coulomb per second
  3. One volt per second
  4. One coulomb per volt
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Correct answer: B. One coulomb per second

1. Electric current measures how fast charge moves past a point. 2. The SI unit of charge is the coulomb and the SI unit of time is the second. 3. One ampere is therefore one coulomb of charge flowing each second. 4. One joule per second is a rate of energy, which is power rather than current. _Source: OpenStax Chemistry (CC BY 4.0), Chs 7 and 17, section 17.1 Balancing Oxidation-Reduction Reactions_

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Iron(II) is converted to iron(III) during a redox reaction. What role does the iron(II) play?

  1. It is the oxidizing agent
  2. It is a spectator ion
  3. It is the inert electrode
  4. It is the reducing agent
Show answer and solution

Correct answer: D. It is the reducing agent

1. Going from a 2+ charge to a 3+ charge means one electron has been given away. 2. Giving electrons away is oxidation, so the iron(II) is oxidized. 3. The electrons it releases go on to reduce something else in the reaction. 4. A species that causes reduction elsewhere is the reducing agent. 5. The oxidizing agent is the species being reduced, which is a different species here. _Source: OpenStax Chemistry (CC BY 4.0), Chs 7 and 17, section 17.1 Balancing Oxidation-Reduction Reactions_

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