Question

In this experiment you will be using the two half reactions Cu?"/Cu and Zn2 /Zn. The standard electrode potential, E°, for these half reactions is +0.34V and-0.76V respectively, so the Nernst Equation for these half reactions is the following Cu ea)+2e - Cus) E - 0.34V 0.0592V Cu2+] 0.0592V Zn 2 Note that solids by definition have unit concentration so Cu and Zn appear as 1. Also the Eo values are given in the Table of Standard Electrode Potentials with the lab Remember, there is no need to switch the sign of E°. In lecture you have learned that reduction occurs at the electrode that is the cathode and oxidation occurs at the electrode that is the anode. In general, on a multimeter (voltmeter) the Black lead (COM) is considered the ground or the negative lead (in our case the anode for oxidation). The Red lead (V) is considered the positive lead (in our case the cathode for reduction). For an electrochemical cell to be spontaneous, Ecell has to be positive. Start off by connecting the black lead to the Zinc electrode and the red lead to the copper electrode. If the voltage is negative, swap the connections. From this information, you then can determine which cell is being oxidized and which is being reduced Setup the electrochemical cell as in the previous experiments. You will create two half cells using 10mL glass beakers. One beaker will contain the zinc sulfate/zinc electrode half-cell, and the other the copper sulfate/copper electrode half-cell. The solutions will be electrically connected using a salt bridge (a strip of filter paper soaked in Na s04-) Connect the red clip to the copper electrode and the black to the zinc electrode after cleaning them in 0.05M HNO3. Make sure there is a good connection between the voltmeter leads and the electrodes. If there are fluctuations, adjust the leads and stir the solutions with the electrodes. Read and record the voltage from the meter Given the concentration of the copper sulfate solution as 0.10M, determine the concentration of the Zn* in the zinc cell from the Ecel.

how would you go about solving this problem via using equations

just looking for the equation order i should go about solving this problem

Answer 1

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