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An electrochemical cell consists of a Pt|H*(aq,1.00 M) |H₂(9) cathode connected to a Pt|H+ (aq)|H₂(g) anode in which the H* concentration is that of a buffer consisting of a weak acid, HA(0.181 M), mixed with its conjugate base, A (0.157 M). The measured cell voltage is Eºo 0.258 V at 25 °C, with PH₂ = 1.00 atm at both electrodes. Calculate the pH in the buffer solution and the Ka of the weak acid. cell a Submit Answer Retry Entire Group pH = K₂ = 9 more group attempts remaining

An electrochemical cell consists of a Pt|H*(aq,1.00 M) |H₂(9) cathode connected to a Pt|H+ (aq)|H₂(g) anode in which the H* concentration is that of a buffer consisting of a weak acid, HA(0.181 M), mixed with its conjugate base, A (0.157 M). The measured cell voltage is Eºo 0.258 V at 25 °C, with PH₂ = 1.00 atm at both electrodes. Calculate the pH in the buffer solution and the Ka of the weak acid. cell a Submit Answer Retry Entire Group pH = K₂ = 9 more group attempts remaining

Chemistry & Chemical Reactivity
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter19: Principles Of Chemical Reactivity: Electron Transfer Reactions
Section19.5: Electrochemical Cells Under Nonstandard Conditions
Problem 19.7CYU: The half-cells Ag+(aq. 1.0 M)|Ag(s) and H+(aq, ? M)|H2(1.0 bar) are linked by a salt bridge to...
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An electrochemical cell consists of a Pt|H+ (aq,1.00 M)|H₂(g) cathode connected to a Pt|H+ (aq)|H₂(g) anode in which the H+ concentration is that of a buffer consisting of a weak acid, HA(0.181 M), mixed with its conjugate base, A (0.157 M). The measured cell voltage is Eºcell = 0.258 V at 25 °C, with PH₂ = 1.00 atm at both electrodes. Calculate the pH in the buffer solution and the Ka of the weak acid. Submit Answer Retry Entire Group pH = K₂ = 9 more group attempts remaining
Transcribed Image Text:An electrochemical cell consists of a Pt|H+ (aq,1.00 M)|H₂(g) cathode connected to a Pt|H+ (aq)|H₂(g) anode in which the H+ concentration is that of a buffer consisting of a weak acid, HA(0.181 M), mixed with its conjugate base, A (0.157 M). The measured cell voltage is Eºcell = 0.258 V at 25 °C, with PH₂ = 1.00 atm at both electrodes. Calculate the pH in the buffer solution and the Ka of the weak acid. Submit Answer Retry Entire Group pH = K₂ = 9 more group attempts remaining
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