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the current passes through solution a whole night at the same intensity when a stabilized source of current was used.
Do you really mean that? A constant current source will increase its output voltage to whatever is required to generate the set current (up to the design limit of the source), so the concentration and dispersal of electrolyte is irrelevant and eventually the voltage will rise enough to electrolyse the water.
I don't get what you are coming from , the salt solution reacts within itself giving the flow of charge, copper doesnt change when you pass electric current through it, why should any other conductor?It seems your beef with electrochemistry is wild and undirected as now you are just mucking about with saline solution and wondering why nothing happens... nothing happens because there is nothing to happen, things can carry a charge without being affected in any significant way that is what conductance is about.
OK I will repeat hopefully in plainer english.Dissociation IS a chemical reaction.. trying to argue its not is quite simply ludicrous and shows VERY little understanding of even the very basics of chemistry.2. The solution is a conductor.. have you ever asked how electricity goes through other conductors? again from wikipedia"In metals such as copper or aluminum, the movable charged particles are electrons. Positive charges may also be mobile, such as the cationic electrolyte(s) of a battery, or the mobile protons of the proton conductor of a fuel cell." The movable charged particle sin this case are the dissociated ions. and btw if you do try to perform electrolysis on salty water be prepared for more than you expect (2 NaCl(aq) + 2 H2O(l) → 2 NaOH(aq) + H2(g) + Cl2(g))
OK, this thread is wrong from the start.This" the arrangement must be in parallel in order to have a potential lower then 1.7 V, avoiding water electrolysis. "shows a lack of understanding of electrode potentials.Water will be electrolysed at lower voltages.And this proves it "(there is a small current which can be detected switching the ammeter on micro domain, but this current is irrelevant for the experiment). "Al this "From electrochemistry we know that for water electrolysis are necessary more then 1.7 Volts, and for NaCl electrolysis approx. 4 Volts." is also simply wrong, it's the sort of thing that's written by someone who repeatedly refuses to accept that he needs to learn." After a short time interval the intensity of electric current must became zero and the solution transforms in a capacitor in this conditions."Actually, it's as likely to have turned into a cell as a capacitor.Go and learn some electrochemistry and come back when you have learned there's nothing special about 1.7 volts.
Dear simple engineer, When you want to give me lessons of chemistry please go to the essence and not to what you like to interprete...When sodium chloride dissolves in water there is no proper reaction because there is no process of interconversion of ,,chemical species”. Both substances remain in quite the same states (of course there is a interaction between them in solution).Sodium is present as cation in solid cristal and also in solution. Chlorine is present as anion both in cristal and solution. So... the fact you ommited, with or without intention, to write the charges for the solid NaCl .... does not mean they are reacting...Please stop writing nonsens like NaOH ...HCl But, by a physical process (like simple evaporation, or for those who work gentler a under vaccum freezing evaporation,) I can take out the water out from ssolution... and I remain with solid NaCl as initial .This means putting sodium chloride into water is a ,,physical process” and not a chemical one ...When after putting NaCl into water you will be able to recover another ,,chemical species” then I will be the first to recognise I am wrong. For the moment none was able to do such thing. I do not comment what is happen in solution ....because we suppose only ...I repeat again ... the topic of the experiment ...If an electric current pass through a solution and no reaction take place at electrodes, it means the electrolysis laws are overrulled ...It is not worth to give you the references related to the quantity of electricity passing through solution and the mass of substance transformed at electrodes. On the other hand, if you admit that reaction takes place at electrodes at those potential (1,5 V), and therefore there is an increase for the electric current in circuit, it means at least the electrochemical series of reduction and oxidation need to be changed...Again choose what is more pleasent for you ... both means something is wrong in what is written in the books .. I did not get messed up with anything... NaCl added to water increase the conductibility, increase the so called ionic strength, increase the ability of the solution to carry an current .. etc I am sorry but as far I live on the continent I do not have the ,,ability to taste your british houmor ..”...
Every case.. Think of the reversible reaction.. what happens if you put NaOH and HCl together? (I would suggest doing it aqueously)You still dont get conductivity.. think of the conductor (salty water) being like any other conductor (copper wire) and you may grasp a little understanding.. Its not fully truthful, but its close enough to begin learning with.
Dear simple engineer, When you want to give me lessons of chemistry please go to the essence and not to what you like to interprete...When sodium chloride dissolves in water there is no proper reaction because there is no process of interconversion of ,,chemical species”. Both substances remain in quite the same states (of course there is a interaction between them in solution).Sodium is present as cation in solid cristal and also in solution. Chlorine is present as anion both in cristal and solution. So... the fact you ommited, with or without intention, to write the charges for the solid NaCl .... does not mean they are reacting...Please stop writing nonsens like NaOH ...HCl But, by a physical process (like simple evaporation, or for those who work gentler a under vaccum freezing evaporation,) I can take out the water out from ssolution... and I remain with solid NaCl as initial .This means putting sodium chloride into water is a ,,physical process” and not a chemical one ...When after putting NaCl into water you will be able to recover another ,,chemical species” then I will be the first to recognise I am wrong. For the moment none was able to do such thing. I do not comment what is happen in solution ....because we suppose only ...