3. A galvanic cell consisting of a Cu- Cu half cell versus a H - H2 half cell was used to determine the pH of an unknown solution. The unknown solution was placed in the hydrogen half cell and the pressure of the hydrogen gas controlled at 1 atm. The concentration of Cu in the Cu+- Cu half cell was 1.0 M and the emf of the cell at 25°C was determined to be +0.48V a) Draw the cell and label the anode and the cathode. b) Label which electrode is positive and which is negative. c) Write the balanced equation for the reaction. d) Calculate the pH of the unknown solution.

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3. A galvanic cell consisting of a Cu- Cu half cell versus a H - H2 half cell was
used to determine the pH of an unknown solution. The unknown solution was
placed in the hydrogen half cell and the pressure of the hydrogen gas controlled at
1 atm. The concentration of Cu in the Cu+- Cu half cell was 1.0 M and the emf
of the cell at 25°C was determined to be +0.48V
a) Draw the cell and label the anode and the cathode.
b) Label which electrode is positive and which is negative.
c) Write the balanced equation for the reaction.
d) Calculate the pH of the unknown solution.
Transcribed Image Text:3. A galvanic cell consisting of a Cu- Cu half cell versus a H - H2 half cell was used to determine the pH of an unknown solution. The unknown solution was placed in the hydrogen half cell and the pressure of the hydrogen gas controlled at 1 atm. The concentration of Cu in the Cu+- Cu half cell was 1.0 M and the emf of the cell at 25°C was determined to be +0.48V a) Draw the cell and label the anode and the cathode. b) Label which electrode is positive and which is negative. c) Write the balanced equation for the reaction. d) Calculate the pH of the unknown solution.
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