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Electrochemistry and Solubility

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Please provide some assistance on understanding how to get the half reactions (balanced) all the way to the solubility for the question below, using the nernst equation and solubility equation. I would greatly appreciate it. The part that I really have no clue how to get is the solubility of Bi2S3 so if you would like, please just provide a step by step procedure on how to obtain that from the K equation value:

Question: The potential of the cell Bi|Bi2S3(s) |Bi2S3(aq)|Bi is 0.96 V at 25*C. Calculate the solubility of Bi2S3, assume it is an ideal solution.

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Solution Summary

The solution calculates the solubility of Bi2S3.