Chemical elements
  Nickel
    History
    Occurrence
    Isotopes
    Energy
    Production
    Preparation
    Application
    Catalyst
    Physical Properties
      Gravity
      Hardness
      Mechanical Properties
      Compressibility
      Plastic Flow
      Coefficient of Expansion
      Thermal Conductivity
      Molten Nickel
      Magnetic Power
      Thermal Properties
      Index of Refraction
      Radiation Energy
      Spectrum
      Absorption Spectra
      X-ray Spectrum
      Emission of Electrons
      Photoelectric Effect
      Ionization Potentials
      Conductivity
      Conductivity of Crystal Nickel
      Voltaluminescence
      Contact Potential
      Electrochemical Series
      Electrode Potential
      Over-voltages
      Salts Solutions
      Electrodeposition
      Nickel-Iron Accumulator
      Thermoelectric Force
      Peltier effect
      Thomson effect
    Compounds
    PDB 1a5n-1g2a
    PDB 1g3v-1mn0
    PDB 1mro-1s9b
    PDB 1scr-1xmk
    PDB 1xu1-2cg5
    PDB 2cqz-2jih
    PDB 2jk8-2v4b
    PDB 2vbq-3c2q
    PDB 3c6c-3h85
    PDB 3hdp-3kvb
    PDB 3l1m-3o00
    PDB 3o01-4ubp
    PDB 8icl-9ant

Nickel in Electrochemical Series






C. Drucker placed nickel in the electrochemical series... Zn, Fe, Cd, Tl, Co, N, Pb,...; and B. Neumann,... Zn, Cd, Fe, Co, N, Pb,... G. Tammann's observations were discussed in connection with cobalt. M. Faraday, and J. C. Poggendorff observed the place of nickel in the electrochemical series in dil. sulphuric acid; S. Marianini, in sea-water with 1/100th part of sulphuric acid; M. Faraday, and A. Avegadro and V. Michelotti, in dil. nitric acid; M. Faraday, in conc. nitric acid; M. Faraday, in hydrochloric acid; J. C. Poggendorff, in a soln. of potassium cyanide, and of potassium ferrocyanide; M. Faraday, in potassium hydroxide, and potassium sulphide. M. M. Haring and E. G. van der Bosche found cobalt to be more electropositive than nickel. The subject was studied by A. S. Russell and co-workers, H. T. S. Britton, E. Dubois, G. N. Glasoe, R. Vieweg, and by C. B. Gates; and J. E. Schrader examined the effect of heat treatment on the contact difference of potential. W. J. Muller and K. Konopicky showed that nickel exhibits a motoelectric effect, in that a current is produced in a short-circuited cell, consisting of two similar electrodes, with one electrolyte, by a movement of one electrode. T. Mashimo observed that with electrodes in a M-soln. of ferric chloride, with agitation at one electrode, the potential at the disturbed electrode was positive, and at the undisturbed electrode, negative. S. Procopiu found the e.m.f. of nickel electrodes moving in water, in 0.2N-H2SO4, and 0.2N-HNO3 to be, respectively, 0.010, 0.072, and 0.054 volt. C. E. Mendenhall and L. R. Ingersoll found that globules of metal on a Nernst's glower move against the current.

O. Erbacher studied the ionic exchange with nickel and a soln. of a nickel salt; and H. Brintzinger and co-workers, the hydration of complex ions. A. Heydweiller found the ionic mobility of nickel, ½N••, to be 44.2 at 18°. A. Feiler gave 50.5; K. Murata, 45.1 at 18°, and 53.0 at 25°; E. Rona, 48.0 at 18°; W. Althammer, 50.1 for the chloride, 51.1 for the bromide, and iodide; and W. Riedel gave for soln. with a mol of the salt per 21.5 and 300, the respective values 0.3616 and 0.3960. W. Ostwald calculated the heat of ionization, CoCo••, to be 68 kilojoules on the assumption that the heat of ionization, H2=2H, is zero. J. D. Bernal and R. H. Fowler calculated for the ionization energy of the Co••-ions, 580 Cals. per gram-ion.


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