A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a galvanic cell constructed with a graphite electrode and a half-cell of AgCI(s) + e¯ → · Ag(s) + CI¯(aq) E°red = 0.2223 V And a copper electrode with 0.500 M Cu²* as the second half cell Cu2*(aq) + 2 e → Cu(s) E°red= 0.337 V The measured cell potential when the water sample was placed into the silver side of the cell was 0.0623 V. a) What is the standard cell potential for this cell in V? b) What is the value of the standard free energy (in kJ) for this reaction? c) Write the balanced equation for the overall reaction in acidic solution. d) And the measured cell potential is 0.0623, what is the concentration of chloride ions in the solution?

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A student wishes to determine the chloride ion concentration in a water
sample at 25 °C using a galvanic cell constructed with a graphite
electrode and a half-cell of
AgCI(s) + e¯ → Ag(s) + CI (aq) E°red = 0.2223 V
And a copper electrode with 0.500 M Cu²* as the second half cell
Cu2*(aq) + 2 e→ Cu(s) E°red= 0.337 V
The measured cell potential when the water sample was placed into the
silver side of the cell was 0.0623 V.
a) What is the standard cell potential for this cell in V?
b) What is the value of the standard free energy (in kJ) for this reaction?
c) Write the balanced equation for the overall reaction in acidic solution.
d) And the measured cell potential is 0.0623, what is the concentration of
chloride ions in the solution?
Transcribed Image Text:A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a galvanic cell constructed with a graphite electrode and a half-cell of AgCI(s) + e¯ → Ag(s) + CI (aq) E°red = 0.2223 V And a copper electrode with 0.500 M Cu²* as the second half cell Cu2*(aq) + 2 e→ Cu(s) E°red= 0.337 V The measured cell potential when the water sample was placed into the silver side of the cell was 0.0623 V. a) What is the standard cell potential for this cell in V? b) What is the value of the standard free energy (in kJ) for this reaction? c) Write the balanced equation for the overall reaction in acidic solution. d) And the measured cell potential is 0.0623, what is the concentration of chloride ions in the solution?
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