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Write the Nernst equation for the following processes at some temperature T.
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Chemistry: Atoms First
- Calculate the value of E for each of the following reactions. Decide whether each is product-favored at equilibrium in the direction written. [Reaction (d) is carried out in basic solution.] (a) Br2() + Mg(s) Mg2+(aq) + 2 Br(aq) (b) Zn2+(aq) + Mg(s) Zn(s) + Mg2+(aq) (c) Sn2+(aq) + 2 Ag+(aq) Sn4+(aq) + 2Ag(s) (d) 2 Zn(s) + O2(g) + 2 H2O() + 4 OH(aq) 2[Zn(OH)4]2(aq)arrow_forwardWhat is the cell potential (Ecell) of a spontaneous cell that is run at 25C and contains [Cr3+] = 0.10 M and [Ag+] = 1.0 104 M?arrow_forwardCalculate the standard cell potential of the cell corresponding to the oxidation of oxalic acid, H2C2O4, by permanganate ion. MnO4. 5H2C2O4(aq)+2MnO4(aq)+6H+(aq)10CO2(g)+2Mn2+(aq)+8H2O(l) See Appendix C for free energies of formation: Gf for H2C2O4(aq) is 698 kJ.arrow_forward
- Consider the following galvanic cell: A 15 0-mole sample of NH is added to the Ag compartment (assume 1.00 L of total solution after the addition). The silver ion reacts with ammonia to form complex ions as shown: Ag+(aq)+NH3(aq)AgNH3+(aq)K1=2.1103AgNH3+(aq)+NH3(aq)Ag(NH3)2+(aq)K2=8.2103 Calculate the cell potential after the addition of 15.0 moles of NH3.arrow_forwardWhat is the cell potential of the following cell at 25C? Ni(s)Ni2+(1.0M)Sn2(1.5104M)Sn(s)arrow_forwardWhat is the standard cell potential you would obtain from a cell at 25C using an electrode in which Hg22+(aq) is in contact with mercury metal and an electrode in which an aluminum strip dips into a solution of Al3+(aq)?arrow_forward
- What is the standard free energy change and equilibrium constant for the following reaction at 25 °C? 2Ag+(aq) + Fe(s) ⇌ 2Ag(s) + Fe2+(aq)arrow_forwardWhat is the value of the equilibrium constant for the reactionbetween each pair at 25°C? (a) Cr(s) and Cu2+(aq) (b) Sn(s) and Pb2+(aq)arrow_forwardFor the galvanic cell 2Ag+ + Cr → 2Ag + Cr2+, which equation allows you to correctly calculate the standard cell potential?arrow_forward
- In a cell with an aluminum electrode in a solution of aluminum nitrate and a zinc electrode in a solution of zinc nitrate: Al|Al3+ || Zn2+|Zn. If you increase the concentration of Zn2+, which of the following is true about the cell potential?arrow_forwardDevise cells in which the following are the reactions and calculate the standard cell potential in each case:(i) Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)(ii) 2 AgCl(s) + H2(g) → 2 HCl(aq) + 2 Ag(s)(iii) 2 H2(g) + O2(g) → 2 H2O(l)arrow_forwardUse the Nernst equation to calculate the cell potential, Ecell, for a galvanic cell consisting of Fe/Fe+2 and Pb/Pb+2, if [Pb+2]= 0.0021 M and [Fe+2] = 0.11 M at 25 degrees Celsius.arrow_forward
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