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A galvanic cell with
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- issue 17Suppose you want to build a galvanic cell where the half-reaction at the cathode is: Fe3+(aq) + e- → Fe2+(aq) Choose a half-reaction that would take place at the anode. The choice is yours. Suggest substances that would form the electrodes of this cell.arrow_forwardWhat is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Ag+ concentration is 1.09 M and the Zn2+ concentration is 5.41×10-4 M? 2Ag+(aq) + Zn(s) 2Ag(s) + Zn2+(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given: Submit Answerarrow_forwardWhat is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Cu2+ concentration is 1.34 M and the Mg2+ concentration is 8.81×10-4 M ?Cu2+(aq) + Mg(s) Cu(s) + Mg2+(aq)Answer: _____ VThe cell reaction as written above is spontaneous for the concentrations given: tue or false?arrow_forward
- Calculate the cell potential of a voltaic cell given the following standard potentials: X -> X2+ + 2 e- Eo = -1.69 V Y3+ -> + 3 e- -> Y Eo = 0.94 V Note: Answer in 2 decimal places.arrow_forwardWhat is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Pb2+ concentration is 1.28×10-4 M and the Mg2+ concentration is 1.28 M ?Pb2+(aq) + Mg(s) Pb(s) + Mg2+(aq)Answer:_______ VThe cell reaction as written above is spontaneous for the concentrations given: (true/false)arrow_forwardWhat is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Hg2+ concentration is 1.33×10-4 M and the Al3+ concentration is 1.34 M? 3Hg2+(aq) + 2Al(s)3Hg(l) + 2Al3+(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given: Submit Answerarrow_forward
- When a solution of NaI in water was electrolyzed with graphite electrodes, a gas was evolved at the cathode and a yellow-brown color was observed around the anode. The solution became basic. Which one of statements (a) - (d) is not correct? If all are correct, select option (e). Please see the data page for relevant electrode potentials for the half reactions.a) OH- ions were formed at the cathode.b) I- ions were oxidizedc) The gas, which was evolved, was O2.d) Water was reducede) Statements (a) - (d) are all correctarrow_forwardThe oxidation of methanol, as described by the equation below, has ∆G degree value of -937.9 KJ/mole. What is the standard cell potential for the methanol fuel cell? 2CH3OH + 3O2 → 2CO2 + 4H2Oarrow_forwardWhat is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Cu2+ concentration is 1.25 M and the Al3+ concentration is 4.96×10-4 M ?3Cu2+(aq) + 2Al(s)3Cu(s) + 2Al3+(aq)Answer: ___VThe cell reaction as written above is spontaneous for the concentrations given: TRUE/FALSE?arrow_forward
- When the Pb2+ concentration is 1.10 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 2.361V. What is the Mg2+ concentration?Pb2+(aq) + Mg(s) Pb(s) + Mg2+(aq) Answer:___Marrow_forwardWhat is the calculated value of the cell potential at 298K for an electrochemical cell with the following reaction, when the Pb2+ concentration is 7.14×10-4 M and the Mg2+ concentration is 1.35 M? Pb2+(aq) + Mg(s) Pb(s) + Mg2+(aq) Answer: V The cell reaction as written above is spontaneous for the concentrations given:arrow_forwardResearch and write a report on the use of zinc as a “sacrificial anode” to minimize the corrosion of iron and steel such as on ships. Use the standard electrode potentials given in question 2 above to predict the cell emf and overall equation for the reaction that would occur in standard conditions between zinc and iron. With ocean-going ships, however, what is the solution in which the two metals are immersed? Is this solution always at an exact concentration of 1 mol dm-3? And in what ways does this real-life situation differ from the standard condition of 25oC / 298Karrow_forward
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