Problem: Consider the half reaction Ag+ ( aq ) + e-  →  Ag( s ).  Which of the lines in the following diagram indicates how the reduction potential varies with the concentration of Ag+?

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We are asked which of the lines in the following diagram indicates how the reduction potential varies with the concentration of Ag+.


The half-reaction for Ag+:

     Ag+(aq) + e- → Ag(s) 

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Problem Details

Consider the half reaction Ag+ ( aq ) + e-  →  Ag( s ).  

A graph has log of Ag+ concentration on the x-axis and E subscript red on the y-axis (both unscaled). Line 1 increases linearly, line 2 is horizontal midway up the y-axis, and line 3 decreases linearly. There is a vertical dashed line where all three intersect.

Which of the lines in the following diagram indicates how the reduction potential varies with the concentration of Ag+?

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