The question goes as follows:
Standard cell potentials are determined with 1.0 M solutions of ions. In this experiment, we will use 0.10 M solutions of Zn2+, Cu2+, Pb2+, and Ag1+ to minimize the amount of hazardous waste generated. In this series of questions, you will figure out what effect this will have on the voltages you observe.
Consider a cell consisting of a Cu2+/Cu couple, and a Ni2+/Ni couple.
a. Starting with 1.0 M solutions of ions (standard conditions), evaluate Q in the Nerst Equation.
OK, so, Q=[products]^coeff/[reactancts]^coeff. I'm figured out th equation to be 2Cu^2+ + Ni<---> Ni^2+ + 2Cu^1+. The Q equation would be= [Ni]/[Cu^2+]^2, right? but I have no idea how to get the Molarities!! Is Cu^2+ 0.1M??? What's Ni?? PLease help!
2007-11-14
12:46:42
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2 answers
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asked by
flaquita
1
in
Science & Mathematics
➔ Chemistry