
Interpretation: The type of reaction that occurs during an
Concept Introduction: In a voltaic cell, oxidation takes place at the anode and reduction takes place at the cathode. In oxidation, electrons are released and in reduction, electrons are added to the reactant. The oxidation state of the reactant increases during oxidation and decreases during reduction.

Explanation of Solution
In an electrochemical process, a
In oxidation, the loss of electrons takes place by an element, and its oxidation state increases. For example, the oxidation of Ca can be represented as follows:
Similarly in reduction, the gain of electrons takes place by an element. Here, the oxidation state of the element decreases. For example, the reduction of Cu can be represented as follows:
Chapter 21 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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