Question

Which of the following phrases best defines a redox (oxidation-reduction) reaction? (2 pts)

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2 points
a reaction in which oxygen combines with different atoms
a reaction in which electrons are transferred between different atoms
a reaction in which electrons are released from the system
a reaction in which the number of oxygen atoms is reduced

Answer 1

Answer: A reaction in which electrons are transferred between different atoms

Explanation:

A redox reaction example:

oxidation: Zn(s) --> Zn^2+(aq) + 2e-

reduction: Cu^2+(aq) + 2e- --> Cu(s)

redox: Zn(s) + Cu^2+(aq) --> Zn^2+(aq) + Cu(s)

2 electrons are transferred between Zn and Cu.