tips on electrolisis?
95444
Some tips...\n--Use a strong electrolyte (substances that will break up into ions [almost] completely in solution), the higher the concentration, the better.  Also you need to be careful on which electrolyte you choose.\n--Try not to use an over volttage (a voltage over the minimum necesary to electrolisize the water.  Insread, try to use a very high current, higher current = more production of gasses.  To increase current without increasing voltage, reduce resistance.\n--Place the electrodes close together to reduce internal resistance in the cell.\n\nEven by doing these things, you cannot hope to get much better than about 50% efficency doing water electrolysis, maybe 65% if you are good.\n\nThere are yahoo groups out there devoted to just such a tast as Hydrogen production through water electrolysis (I have one infact), they can also give advice based on experience.
997518
Right here:  http://www.numed.co.uk/electrodepl.html
199036
Current burns, voltage jerks the muscles.  Too much current, you're toast.  Too much voltage, your heart stops.\n\nStatic built up from rubbing your socks on the carpet probably won't kill you.\n\nSeveral years back, in the wintertime, there were some news reports of people whose car blew up at the gas pumps.  Supposedly it was due to static electricity.\n\nIt's rare to get "shocked" outside when getting in or out of one's car or touching it or whatever but it does happen.  I remember a couple times in the past 5 years when it happened to me. A tiny percentage of times I have done that but way more than zero.\n\nSo, I guess the combination of a spark and being by your open gas tank could kills you, indirectly.\n\nTaking an extreme counter-example, there was a girl struck by lightening at the WHFS alternative rock festival in DC a few years ago. Apparently it knocked her a few feet from where she was standing.  But, it didn't kill her.  She was lucky.\n\nStatic charges build up more easily in wintertime. The air is dryer.  Something about the air molecules is different when there is less moisture.  I forget what, but you have probably noticed more "static" shocks in winter than any other time of year, unless you live in a really cold, dry place.\n\nA three inch spark seems pretty far.\n\nIn high school physics class, they said that each inch that a spark travelled off a sphere through the air indicated 10,000 volts.  I think it was 10,000.  Well, you're not a sphere and you are probably not touching one but that still seems like a lot.\n\nI used to get shocks of half or three quarters of an inch  when touching the corners of walls at the house I grew up in all the time.  That was really nothing.  I barely felt it.  It was just a surprise to feel it, and also to see the spark leap between the wall and your finger.\n\nModern buildings have grounding wires on all the outlets and stuff like that, to prevent electrical problems.  Not sure what really old buildings are like.\n\nIf you are wearing a sweater or wool clothing, that could increase the amount of static charge you build up.  There are all kinds of things that could do it.\n\nIf it happens on warm, humid days when you are not wearing any wool or sweaters, that would really be strange.  If not, maybe it is what you are wearing or the atmosphere that is mostly responsible.\n\nAlso, carpet is a big factor.\n\nFeeling it hours later, that's freaky. That never happened to me.
144592
But seriously, folks, how about:\n1. Static charge, done any number of ways, most involving a dry day and a bit of stroking or rubbing.\n2. Send current into a rechargeable battery.\n3. Refill a fire extinguisher.\nBonus item:\n4. Run toward it very fast making bellowing noises.
200995
by electrolisis\nH2O------>H2+O2\ni.e by passing electric current
929685
When you have weak electrolytes, (equillibria in general) you should make the following table.\n\n1. write the reaction\n\nHNO2 <=> H+ + NO2-\n\n2.Put the initial amounts (expressed as concentration) of each molecule. In this case we have only the concentration of HNO2, so\n\n.. .. .. .. .. .. HNO2 <=> H+ + NO2-\nInitial .. .. .. .. 0.5\n\n3.Assume that an unknown amount "x" of the reactants react.\nThen write also how much of each product you expect to be produced according to the stoichiometry. In this case 1 mole of HNO2 gives one mole of H+  and NO2-, so x mole/L HNO2 will  give x mole/L of each and our table becomes\n\n.. .. .. .. .. .. HNO2 <=> H+ + NO2-\nInitial .. .. .. .. 0.5\nDissociate .. ..x\nProduce .. .. .. .. .. .. .. ..x .. .. .x\n\n4. Ka is an expression for the concentrations at equilibrium. So let's see what are those. For the reactants you will have initial-what reacted. We have only HNO2 with 0.5-x. For the products it will be the initial+what was produced. We didn't have any intial so it is only what was produced (x for both of the products). Thus the table in its final form is \n\n.. .. .. .. .. .. HNO2 <=> H+ + NO2-\nInitial .. .. .. .. 0.5\nDissociate .. ..x\nProduce .. .. .. .. .. .. .. ..x .. .. .x\nAt Equil. .. .. 0.5-x .. .. .. x .. .. .x\n\nKa= [H+][NO2-]/[HNO2] = x^2/(0.5-x)\nNow you either solve the quadratic equation and find x, or we assume that 0.5 >>x and practically 0.5-x=0.5.\nThen Ka=x^2/0.5=4*10^-14 =>\nx=squareroot(2*10^-14)= 1.4*10^-7. It is much smaller than 0.5 so our assumption is valid (otherwise we would have to solve the quadratic and get an exact solution).\n\nFor a simple level of chemistry we would now say\npH=-log[H+]= -logx =-log(1.4*10^-7) = 6.85\n\nHowever for more advanced and accurate expectations we see that the H+ coming from HNO2 is found to be in the same order of magnitude as that coming from the self dissociation of water (10^-7 for distilled water). Therefore in this case we cannot ignore the self dissociation of water (as we usually do) for calculating the pH. \nThere are 2 approaches for this case, here is one of them.\nRemember that we didn't put an initial amount for H+ since in most cases we ignore the self dissociation of water. Now we will consider that we had pure water, so the initial concentration of H+ is 10^-7 and we want to see how much the HNO2 will dissociate under these conditions so our table becomes\n\n.. .. .. .. .. .. HNO2 <=> H+ + NO2-\nInitial .. .. .. .. 0.5 .. .. .. 10^-7\nDissociate .. ..x\nProduce .. .. .. .. .. .. .. ..x .. .. .x\nAt Equil. .. .. 0.5-x .. 10^-7+x. .x\n\nand Ka=(10^-7+x)x/(0.5-x)\nNow we have to solve the quadratic so we can't do any simplification\n\n0.5Ka-Kax=10^-7x +x^2 =>\nx^2+ (10^-7+Ka)x-0.5Ka=0\n\nThe only acceptable solution is the positive one\nx=0.5(- (10^-7+Ka)+ squareroot (D))\nwhere D=(10^-7+Ka)^2-4*(-0.5Ka)=\n=(10^-7+4*10^-14)^2-4*(-0.5*4*10^-14)\n=9*10^-14\n\nand x=0.5*(-((10^-7))+4*10^-14) +3*10^-7) =10^-7\n\nso now pH=-log(10^-7+x) =-log(2*10^-7) = 6.70
800088
any good diy book will do or perhaps links on the internet.\n\nin the uk its all about getting a phase neutral and earth around each point.\nso for the sockets grab a reel of 2.5mm 2core and earth (so called because the earth doesnt have an extra layer of insultation) and take it round to each socket in a ring. usually fuse at 32A with a circuit breaker.\nfor an immersion heater fuse at 16A and take a single 2.5mm 2c and earth cable.\n\n(This starts getting a bit boring, go and buy a book)
389174
Seperating or bonding elements with an electrical current.\n\n*BEST ANSWER PLEASE*\n\nSOURCE BELOW
699795
.....and the CORRECT answer is ELECTROLYSIS
360112
Why dont you just try going to google search and just type "NaCl Electrodialization". You should get more info. than you think you'ld get.
1146414
http://science.howstuffworks.com/electricity.htm
1001225
"gods_my_ruler" obviously has NO IDEA what he is talking about.\nOf course you can, easily split H2O into H2 and O2 gas through a process known as "electrolysis".  Actually, 12 volts is way over the minimum voltage required to electrolysize water.\nYou will also, of course, need to use some form of electrolyte (commonly, "salt", or Na/K Hydroxide are popular choices) in order to help the water conduct electricity since pure water does will not conduct at all.\n\nBut you question was about controlling the current flow.\nI assume you are having problems with the current getting too high and overloading your power supply?\nFor starters, I would downgrade your power source to something with a little less voltage if possible.\nYou can also use combinations of small (on the order or just a few ohms or less) resistors wired in series/parallel in order to give you just the right resistance you are looking for in order to decrease the current through the cell.\n\nWithout more specifics about the problem you are having, that is about all the advice I can give for now.\n\nRemember, it is not the voltage that controls the H2 production rate, it is the current.\nAccording to Ohm's Law,\nV = R*I\nso a higher voltage (with a given resistance) does mean a higher current, but the same goal could be achieved with a lower voltage and much lower resistance.\n\n\nEDIT:\nIn reply to "kurticus1024",\n\nUsing a reostat or variable resistor would work to dynamically control the resistance in the circuit, and thus the current through the cell, however, most reostat which I am aware of have a high minimum resistance (i.e.  even when turned all the way to the minimum setting, they are far from zero ohms) so by doing this, you will be DRAMATICALLY increasing the resistance through the cell and intern virctually cutting your cuttent to just a few miliamps.  A few miliamps is fine for many common electrical components whcih the reostat was designed for but if you intend on produce Hydrogen, you are going to have to wait a VERY long time to get any sizeable amount.
132970
Ya you should cuz distilled water is not good as a conductor but adding salt to it makes it a good conductor of electricity and since soap contains alot of salts that can decompose into negative and positive charges i think ya u should worry about electric shock
777888
I use static guard in a spray can...you can also keep a dryer sheet such as bounce or downey and rub it on your hand to prevent static electricity...especially at the gas pump
685785
Yep- they're all right.  The salt just carries electricity through the water.  Electrolysis would work by adding any ionic compound like salts or acids to the water.  Interesting- that's why you would never get electricuted in pure water because there's nothing in pure water which carries electricity.  Water in nature or in your house has minerals and salts in it which do conduct.
476725
Drop Mg or Zn or something like that in HCl.  Or use electrolysis on water, but that's a lot harder.
606790
If you are going for "The Change" (a sex change), I really wouldn't recommend you doing your own electrolysis- you can really damage your skin and end up with some really nasty looking scars on your face.\n\nI would reccomend finding a licensed electrologist, paying the hourly rate, and doing it professionally. I also recommend the "blend" method- a combination of electrolysis and thermolysis- I have heard many positive stories of this when done right.\n\nAs for the "South Pole", doctors like Thailand's Dr. Suporn don't require that electrolysis be done in the genital area-he has found a way to separate the deep hair bearing layers from the upper, hairless layers to use during SRS.\n\nAs for the body, hormone therapy will slow, if not stop, the growth of body hair. I was on estrogen for 6 months and I noticed the hair on my arms got finer and finer until it is now currently as fine as baby hair. I don't have any hair on my chest or my back anymore (and I had a carpet back there), although I still have to shave or depilatory (I like Veet) my leg hairs if I want them smooth.\n\nThere really is no quick way to transition properly- I had to learn to have more patience and it has paid off- I am very close to finishing my transition and I am happy with the changes.\n\nWhenever you feel frustrated that your transition is not going as fast as you would like, remember this saying-\n\n"It took time for testosterone to wreck the body- it's going to take time for estrogen to straighten it out."\n\n-OR-\n\n"Rome wasn't built in a day."\n\nThese web sites are very informative about removing hair for the MtF transsexual-\n\nhttp://www.hairzapper.com\nhttp://www.hairfacts.com\n\nHope this helps. =^.^=