ONLY #1 Metals in Aqueous Solutions by electrowinning
ONLY #1 from the sheet attached. These questions are like chemistry. I need help with these problems involving material engineering and chemistry to see how metals are reduced from oxides. These rxns are like batteries where electrons flow from one area to another. This is a quiz that I already did, but I left somethi ...continues
galvanic cells and faraday's laws
1. Diagram the following galvanic cell (or just tell what it would look like), indicating the direction of flow of electrons in the external circuit and the motion of ions in the salt bridge. Ni(s)lNi2+(aq)llHCl(aq)lH2(g)lPt(s). Also write a balanced equation for the overall reaction in this cell. 2. In the Hall-Heroult for ...continues
Electrolyte concentration and polarization potential
ONLY #5. Hello, could you solve question #5 showing most of your work. I'd like to use it as a study guide. 5*. a) A copper refining cell is operating with an electrolyte which contains 0.05 m Sn2+. At what concentration of Cu2+ will the tin start to plate out in preference to the copper? The cell temperature is 40 ...continues
electrolysis of aqueous solutions
A .100 M neutral aqueous CaCl2 solution is electrolyzed using platinum electodes. A current of 1.50 A passes through the solution for 50.0 hours. (a) Write the half-reactions occuring at the anode and at the cathode (b) What is the decomposition potential? (c) Calculate the mass, in grams, of the product formed at the cathod ...continues
the problem is attached. Note that M is a neighboring molecule. It could be an N2O5 molecule or an inert gas molecule.
pratical question - electro chemistry, redox reactions, and inorganic chemistry
4. A pratical application problem which I have recently encountered: Recently while a stainless steel reactor vessel was being polished, a problem occurred with the workers' environment. While monitoring atmospheric composition while working in the vessel, high levels of carbon monoxide (above 100 parts per million) were de ...continues
General Electrochemistry Problems
Problems found in second year quantitative analysis course: 1. Answer the following questions based on the reaction... a) identify the oxident and write a balanced half-reaction. Please see attached for full question.
Amount of energy required to purify copper using electrolysis?
The purification of copper by electrolysis involves an anode of impure copper and a cathode of pure copper. During the electrolysis, copper (II) ions leave the anode slab and plate onto the cathode slab. The reaction at the anode is Cu(s) = Cu2+(aq) +2e- The reaction at the cathode is Cu2+(aq) + 2e- = Cu(s) Therefore, ...continues
Efficiency of electrolysis (in joules).
The amount of product produced by electrolysis is limited by Faraday's law. Therefore, as I understand it, the amount of product produced depends on the amps rather than on the volts (although the minimum voltage for a given reaction plus overvoltage must be met). For example, lets say you have a reaction that requires at ...continues
I do not understand kinetics at all! Please assist me with these and the attached kinetics questions. Thanks very much. 1)Calculate the mole fraction of methanol (CH OH) in a mixture of equal masses of methanol and water. 3 2)Calculate the molar concentration of chloride ions in a solu ...continues
