# College Chemistry

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What are the concentrations of Pb2+ and Cu2+ when the cell potential falls to 0.370 V?

Given: A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25degrees C . The initial concentrations of Pb2+ and Cu2+ are 5.30×10−2 M and 1.60 M, respectively.

The Einitial cell that I calculated was 0.47. I know how to figure out the Q, but I don't know how to figure out the specific concentrations of Pb2+ and Cu2+ given only this information. Please help me! Thank you :)

• College Chemistry -

Try this. Q = (Pb^2+)/(Cu^2+)= ?
You know Pb goes into soln so it will be 0.053+x and Cu^2+ comes out of soln and it will be 1.6-x.

• College Chemistry -

It worked! Thank you so much :)

• College Chemistry -

pb2+ +.....=pb

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