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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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Nernst Equation concept. You can view video lessons to learn The Nernst Equation. Or if you need more The Nernst Equation practice, you can also practice The Nernst Equation practice problems.

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Based on our data, we think this problem is relevant for Professor Teets' class at UH.