Interpretation: From the list of metal and metal ions, the increasing ease of oxidation and reduction order must be chosen.
Concept Introduction:
Oxidation is the loss of electrons and reduction is the gain of an electron with the help of oxidation number it can be concluded if the element is oxidized or reduced.
Therefore, an increase in oxidation number is observed in the oxidation reaction and a decrease is seen in the reduction reaction.
Answer to Problem 7STP
Arrow
Explanation of Solution
The element
Metal ions are not oxidized because they already lost an electron and have gained a positive charge therefore, arrow 2 represents (downwards) increasing ease of reduction.
Chapter 20 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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