AB Electrochemistry part 2

追加: 2026-05-18

[00:00:00]now we'll see the factors which affects the electrolytic induction factors affecting electrolytic or electrochemical whether it is conduction what are the factors or the factors necessary the first is the nature of the electrolyte just now as talking to you nature of the detriment now each other literally it means means when you dissolve a solute all right for example sodium chloride into water that is the nature of the document when you dissolve ammonium hydroxide into water so ammonium hydroxide sodium chloride what are they the solute we can see which is dissolved into water this is solvent so in case of sodium chloride what if I decide the force of interaction between sodium chloride molecule one molecule of sodium chloride another molecule of sodium chloride is what I can say strong enough definitely strong enough but when I do so see when you dissolve in modern listen carefully when I dissolve in water the high dielectric constant of water alright the high dielectric constant of water hence to dissociate the sodium chlorine good science hence sodium chloride behaves as a strong electrolyte but what about ammonium hydroxide in case of ammonium hydroxide what I find is that when ammonium hydroxide is dissolved in water then the force of interaction between the solute solute that is ammonium hydroxide and ammonia hydroxide is so strong that water cannot dissociate into it science if at all it dissociates dissociates very feebly feebly as I gave me the example let us surrounded molecules of our hydroxide you have taken it the force between ammonium ions and ammonium hydroxide is so strong that that what is not able to be so sealed completely into it science hardly our one two molecules let us say 50 molecules dissociate hence ammonium hydroxide gives us a vehicle a plate so what we learn that in the force of interaction between the solute of the solute is stronger then it behaves as a when you can say we strongly flight considering that on this this dissolving in water it is so States into a science but the force between solute in the solute is stronger but it does not dissociate into its ions then it is dissolve in water then it is known as a weak electrolyte so that is a nature of the electrolyte that means since we were small word in one word I can say strong utilize are the good electrolytes and be clipped like so that what you can say that is very if you so CS really feel it does not dissociate completely they are not the good electrolytes the vehicle effects because strong look like the other good electrolytes so next point is that the next condition is that the first one is learnt about solute solute interaction solute solute interaction is necessary now second one is solvation of ions salvation of ions so here we are going to study about the solute solvent interaction the solute solvent interaction all right now suppose if the solute solvent interaction is stronger just to tell me if the solute solvent interaction let us say that is sodium chloride and water interaction if it is stronger means it is going to pull it towards itself so will it under th city no it's not going to adequately all right definitely because it is stronger not associates I see children one thing you understand you need ions for the conductor city because the electrolyte peak or electrochemical conduction takes place due to the presence of three ions minded not electrons removed from your mind electrons is for metal conduction alright so if the solute solvent interaction is stronger for example in case of lithium chloride when licl is dissolved in water now licl the solute which is dissolved in water the solvent interaction so strong that in ICL dissociates to a very small extent compared to NaCl when it's this when it is dissolved in water not at any seven it dissolves in water it dissociates to a large extent did which this behaves strong and these behaves as a weekly event so the solute solvent interaction should be stronger radhika it should be me solvent solvent interaction means when solute is dissolved in a solvent it should be weaker then only it will dissociate and how do you know see as the size and you come down the group you can see this has the elements of the first goodbye aggregates methods of the first group I returned so what if I decide as you come down the group the size of that am increases as a size and that will increase the distance between this and this fluoride means sodium and chloride is also going to increase the bond length increases when the bond length increases the bond is stronger and weaker first for example this is this pond and for example this bond alright the pen and the cap of the pen we have selected it's a weak but against a stronger bond because cannot break it easily but this pendant as you can see it's a bigger bond length because Martin it's weaker bond yes I am ready TV okay so hence as you come down the grow the size of the atom increases the bond length increases due to which what happens the bond becomes weaker and it is season hence n ICEA the interaction between the solute and solvent is stronger but in any say it is because Karachi products still becoming a slab in the salvation of - next is that is the third point is the nature of the solvent each nature of solvent used yes now he knows oh now first my solute solute in touch second one solute solvent interaction third solvent solvent impressed all right for example sodium chloride when it is the dissolving model it is so 6 into it sense because the water has got high dielectric constant now if sodium chloride is dissolved in Kailasam or dissociate in good science know what because those substances dissolve they the nonpolar solvents and nonpolar solvent does not have high freq on site it will not have to dissociate into a science because the interaction between the solvent and the solvent that is petrol petrol diesel and desert chaos in kerosene I found to be so strong that it will not be so seed into science hence it will not attack for against a history so what we conclude then the nature of the solvent you should be polar or nonpolar in nature for electrolytic addition it should be pure image there is water which should be it should not be nonpolar in age of electronic conduction we can say that remember that electrolytic reduction don't say sir it is dissolving dissolving what will you do if the if it does not resigns it needs to produce ions and that that to large number of ions suppose it is all stores very small extent and gives you a small other finds there are five your sang something like that but later it's a weekly play so you need to understand that not all it should dissolve it should also dissociate into its science then only be Nix as an electrolyte so nature of the solvent should be such that it will help the solute to dissociate into its sciences so solvent solvent interaction sorry it should be not so strong enough or it's so that it will not dissociate into a science all right so hence okay one more factor that is we can say temperature temperature plays a very important role like in metal conduction you remember it so if you increase the temperature the metal conduction decreases why because many conduction takes place with the help of free electrons so when you increase the temperature what happens is that I have tension molecules which are present image they are also set into vibrations for example a copper wire is entering exiting and normal temperature under critics suppose you heat the copper wire do you think it is going to connect more Udacity know what because electrons are moving freely at normal temperature when you increase the temperature that is not only the electrons get excited but also the atoms and molecules get excited these atoms and molecules for it it provides a restriction to the path of the flow of current and hence modify with increase in temperature the metalic conduction decreases and as what I said these atoms and molecules it provides restriction for the power of the flow of current current does not flow all right why because resistance increases due to which always remember that metal conduction decreases with increase in temperature mainly conduction for hydrogen suppose the gadgets which they are using in your house let us say your mobile or something like that or suppose you can see the fire is knowing rotary when it becomes hotter then it is efficiency decreases it may also have a chance that it may burn out Marty it may have a chance to butter for example suppose now you would read this online classes and all these classes you see that you'll go by without starts after some time now there there's a chance that it will burn about all right so hence for that particular purpose what you find is that the metalic conduction decreases with the increase in temperature but electrolytic conduction our topic is electronic conduction not it increases the increase in temperature because when you increase the temperature what happens is that more of the ions dissociate because when you increase the temperature the bond between the solute and solvent the bond between the Sullivans huge weekends so handsome breaks and due to breaking of this particular body comes upon it produces ions and these are excess in the conduction obviously further for that particular purpose solid sodium chloride does not conduct your city but when you eat is fused molten state you are reading in the lower classes it conducts listening because in molten state this is our set free ions which was present in sodium chloride in solid sodium chloride was not free but when I heated it this ions are set free because the bond beacons and I hats are set free or it hence electronic conduction increases with increase in temperature but mental conduction decreases with increasing temperature so these are the factors which affects the electrolyte Akash thank you