Pre-Corrosion Environmental Chemistry

During which process does an atom, molecule, or ion gain one or more electrons?

• Transmutation

• Oxidation

• Reduction

• Neutralization

Electrochemistry is the study of reactions in which charged particles (ions or electrons) cross the interface between two phases of matter, typically a metallic phase (the electrode) and a conductive solution, or electrolyte.

• True

• False

Reactions in galvanic cells are

• spontaneous, redox reactions

• spontaneous, non-redox reactions

• non-spontaneous, redox reactions

• non-spontaneous, non-redox reactions

Voltaic cells are the same as which cells?

• Electrolytic

• Anode

• Electron

• Galvanic

In which cells are electrical energy used to drive non-spontaneous redox reaction?

• Electrolytic

• Anode

• Electron

• Galvanic

Batteries and accumulators are examples of which cells?

• Electrolytic

• Anode

• Electron

• Galvanic

In voltaic cells, reduction happens at the

• anode

• salt bridge

• cathode

• voltmeter

In electrolytic cells, oxidation happens at the

• anode

• salt bridge

• cathode

• voltmeter

In an electrolytic cell the electrode at which the electrons enter the solution is called the ___, the chemical change that occurs at this electrode is called ___.

• anode, oxidation

• anode, reduction

• cathode, oxidation

• cathode, reduction

The oxidation numbers of all the atoms in H₂SO₄ must add up to

• 0

• +5

• +9

• +16