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61. Solving a chemistry problem
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5. For a concentration element consisting of Cd metal in CdSO4 electrolyte solutions with concentrations of 1 and 0.2 mol/1000g, calculate the EMF at 298K. Calculate the activity from the average activity coefficient taken from the reference book or (for dilute solutions) from the ionic strength. For a cell composed of a hydrogen electrode in an H2SO4 electrolyte solution with a concentration of 17 mol/1000g and a calomel half-cell with a KCl concentration of 3.5 mol/1000g, calculate the EMF and pH of the solution containing the H2SO4 electrolyte. Diffuse EMF is ignored. At 298K, the standard potential of the calomel electrode (a(Cl-)=1) is 0.2812V, and the ion product of water is 1.008*10-14.
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