When the Following Oxidation-Reduction Reaction in Acidic Solution Is Balanced,what $\to$

question 68

Multiple Choice

When the following oxidation-reduction reaction in acidic solution is balanced,what is the lowest whole-number coefficient for K⁺(aq) ?
K(s) + Ca²⁺(aq) $\to$ K⁺(aq) + Ca(s)

• A) 5
• B) 4
• C) 1
• D) 3
• E) 2

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