Equivalent weight current efficiency

Costs are estimated for 1992 and do not involve special materials or special cell design. Data were developed by the factor method (41) and do not purport to be any particular process. Equivalent weight of the reactant is 50, and 100% current efficiency is assumed. 

Cathode Efficiency. Faraday s law relates the passage of current to the amount of a particular metal being deposited ie, 96,485 coulombs, equal to one Faraday, deposits one gram-equivalent weight of a metal at 100% efficiency. The cathode efficiency, an important factor in commercial electroplating, is the ratio of the actual amount of metal deposited to that theoretically calculated multipHed by 100%. 

From the loss of weight of the copper anode determine the number of faradays of electricity that were used in the cell. The ratio of the number of equivalents of NaOH to the number of faradays gives the current efficiency. 

L/day of wastewater. The salt content is 4000 mg/L and the cation or anion content is 0.066 gram equivalent weights per liter. Pilot-scale studies using a multicellular stack have been made. It was found that the current efficiency, E, was... 

Fig. 8 Computed current efficiency for two different lamellar, carboxylate blends. The equivalent weight is 1100. Reproduced with permission from Ref. 16, Fig. 8. Copyright 1984, Electrochemical Society.

What is the current in amperes required for a 500-pair stack operating at 93.1% current efficiency, if the initial water flowing at 998.1 gpm is 1,297 ppm, the final water is 214 ppm and the average equivalent weight is 61.47 ... 

If the EQCM acts in this system as a microbalance (i.e., if Eq. (17.1) is applicable), the coordinates of A/ can be recalculated to show Am. The slope of this line is, therefore, the equivalent weight of the metal deposited. Any systematic deviation from the calculated line can be associated with a lower current efficiency, or some other deviation of the system from the conditions under which Eq. (17.1) is applicable. 

The performance properties of PEN present opportunities for replacement of rayon or polyamide in carcass construction. The use of PEN cord in these applications is currently being evaluated in both Asia and Europe. PEN has demonstrated acceptable flexural fatigue equivalent to polyethylene terephthalate (PET) and rayon. It has equivalent toughness to rayon, which is important for sidewall impact resistance. PEN s superior mechanical properties also afford opportunities to use less fiber in carcass construction enabling production of lighter-weight, more fuel-efficient tires. 

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