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Why do we use platinum in electrolysis of sodium chloride ...

Why do we use platinum in electrolysis of sodium chloride ...

is the in which chemical changes accompany the conduction of electricity through electrolytes--solutions of salts or fused salts. is an important example of the use of electrical energy in industry, in which it is used for-- · Electroplating--the deposition of

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  • Chapter The Fundamental Aspects Of Electroless Nickel Plating

    The fundamental Aspects of Electroless Plating 3 In 1844, Wurtz 2 observed that cations were reduced by hypo- phosphite anions. However, Wurtz only obtained a black powder. The first bright metallic deposits -phosphorus alloys were obtained in 191 1 by Breteau

  • Electrolysis of Sodium Chloride | Introduction to Chemistry

    of aqueous sodium . of aqueous NaCl results in hydrogen and gas. At the anode A, Cl- is oxidized to chlorine. The ion-selective membrane B allows the counterion Na+ to freely flow across, but prevents anions such as hydroxide OH- and from diffusing across

  • Nickel Sulfate - an overview | ScienceDirect Topics

    Three distinct processes produce electrolytic nickel: direct matte electrowinning from sulfate solution and electrowinning from solution. Crude nickel anodes are made by reducing oxide with coke at temperatures up to about 1550°C and casting into molds

  • Sample Questions - Chapter 21

    What mass in grams could be electroplated from a solution II by a current of 0.25 amperes flowing for 10 hours? a 12 g b 5.5 g c 0.046 g d 2.7 g e 6.0 g 6. Molten AlCl 3 is electrolyzed for 5.0 hours with a current of 0.40 amperes

  • Electrolysis of nickel chloride solution – bradchem

     · Also, in the lesson, we learned about the solution and how water is a solvent of this. This meant that the ions present in the solution were Ni2+, Cl-, H+ & OH-. is a close metal to iron and so is lower down

  • Sciencemadness Discussion Board - nickel chloride

     · One way to get in a reasonable amount of time with HCl is . I once took an old Canadian coin that was mostly and made it the anode in HCl. HCl is a good conductor, so no problem getting current to flow even with a

  • 16.10: Electrolytic Cells and Electrolysis - Chemistry

     · Thus if a solution of nickel chloride undergoes electrolysis at platinum electrodes, the reactions are Both of these processes are carried out in cells which are forced to operate in the "reverse", or non-spontaneous direction, as indicated by the negative for the above cell reaction

  • NickelII Chloride | AMERICAN ELEMENTS

    is an excellent water soluble crystalline source for uses compatible with chlorides. compounds can conduct electricity when fused or dissolved in water. materials can be decomposed by to chlorine gas and the metal.They are formed through various chlorination processes whereby at least one chlorine anion Cl- is covalently bonded to the

  • Electrodeposition conditions of metallic nickel in

    medium [8, 9], the electrowinning conditions are as follows: current density of 220 A/m, temperature of 60 °C, and its current efficiency is 98%− 99%. There are several advantages in and sulfate electrowinning. For

  • Electrolysis of Sodium Chloride - Molten and Aqueous Solution

    sodium is an important to manufacture many bulk chemicals of commercial utility, like chlorine, sodium hydroxide etc. Sodium is electrolyzed either in a molten state or in aqueous solutions. is, also done in

  • electrolysis of hydrochloric acid products electrode

    The electrolyte hydrochloric acid, provides a high concentration of hydrogen ions H + and ions Cl – to carry the current during the . The electrode reactions and products of the of dil. hydrochloric acid are illustrated by the theory diagram above

  • Electrolysis - Chem1

     · In modern times, the Castner has been displaced by the more-efficient Downs of molten halides is the usual industrial method of preparing all of the metals: Thus if a solution of undergoes at platinum electrodes, the reactions are 2 Electrolysis in aqueous solutions

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