If I remove sodium from a NaCl solution, will the conductivity decrease?
824595
You can't remove the sodium ions without replacing them with something else positively charged. You cannot have a solution with a net charge.\n\nIn the second case, replacing the sodium ions with protons would increase the conductivity of the solution a little bit because protons have a greater mobility than do sodium ions.
573262
Pure water is *not* a good conductor of electricity.  Dissolved ions are necessary to conduct electricity and at room temperature, there is only 10^-7 mol/L of H+ and OH- in pure water.\n\nDissolving salts (including strong acids) in water greatly increases the conductivity of the solution.\n\nTap water is a modest conductor of electricity because of dissolved ionic minerals and impurities.\n\nHeating water increases its dissociation constant making more H+ and OH- available in solution.
113508
If "salt" is Sodium Chloride, then you will be making Hydrogen gas (H2) and (Oxygen gas (O2) and/or Chlorine gas (Cl2)).\n\nUnless you plan on very carefully controlling the potential difference across your electrolytic cell to use just the bare minimum voltage, you are likely to make Chlorine gas at the anode instead of Oxygen.\nOxygen gas has a reduction potential of 1.23 volts, where are Chlorine gas has a reduction potential of 1.36 volts.\nThis means that if you supply just a tiny bit of extra voltage across the cell, instead of just producing Oxygen gas from the water, you will be oxidizing the Chloride ions in solution to make Chlorine gas.
237614
Table salt doesn't get affected at all chemically.\n\nAnd it doesn't raises the boiling point, it lowers it!!!
842976
20 grams\ndissolving compounds and then driving of the solvent is a common way to purify a compound. You will not lose any of the compound unless it is reactive with the solvent you dissolve it in. In the case of water and salt they are not reactive so when you drive off the water you will be left with the same amount of salt that you started with.
152231
I believe it's sodium chloride
378969
it can only pass through non-conducting material. If you used "pure" water it would pass through. pure water is non-conductive. It is the dissolved minerals and metals in the water that makes it conductive.
100560
By a particle diagram, do you mean a graph? If you do, then draw a graph with an X (time) and Y (concentration) axis. When you put NaCl into water, the concentration of NaCl will be 100%. But as time goes by, the NaCl molecules will be pulled away from each other by polar water molecules (NaCl concentration will decrease), causing the appearance of a Na concentration and a Cl concentration. These two concentrations will increase from zero. I believe the slope of the two latter elements will be (theoretically) the same. So basically you should have two lines (increasing NaCl line and one line (which actually includes the 2 separate lines for Na and Cl because they are the same) for Na and Cl crossing each other like an X.
810698
1. VERY PURE water is a poor conductor of electricity. However, very small \namounts of impurities, especially salts, greatly increase the electrical\nconductivity of water.\n2. The main carriers of electrical current are dissolved ions. If a \nbattery is connected to a container of water so that\nthe (+) and (-) poles of the battery are immersed in the water, the\npositive ions will migrate toward the (-) pole and the negative ions will\nmigrate toward the (+) pole (electrical opposites attract). This closes the\n"switch" and electric current flows through the solution.\n3. Different ions can help carry the electric current, some more / some \nless, depending upon their electrical charge and their size. More highly charged, \nsmaller ions are more efficient carriers of the electrical current.\n4. The higher the concentration of ions, the greater is the conductance of \nthe solution.\n5. There is a complication however, the water and / or certain of the ions \nmay undergo a chemical reaction to one or the other, or both of the electrodes.\nYou may not want to introduce this in the beginning but it does happen.\n6. None of the ion electrical current carriers of salts dissolved in water \nare as mobile as "free" electrons in a metal are. And the differences are very\nlarge. For example, if the conductivity of  VERY PURE WATER is 0.000004\nconductivity units, the conductivity of a saturated solution of common\ntable salt NaCl is 23 conductivity units, and the conductivity of a typical\nmetal such as copper wire is 60, 000, 000 conductivity units. So while the\nions in a dissolved salt behave something like "free" electrons, they are\nvery slow and sluggish moving. \nCompletely demineralized water actually does not conduct electricity, and is\nwidely used as a coolant in high powered radio amplifiers.  However, when\nexposed to even small amounts of impurities, (even normal air), It becomes a\nfair conductor.  It is not the water conducting this electricity so much as\nthe dissolved minerals in it.  Some of these minerals are decent insulators\nthemselves, but when dissolved in water still allow conduction because the\nmolecules are now free to move around.\nIn ionic liquids these electrons remain \nstuck to big, round atoms,\nand these atoms do the swimming around, relatively slowly, dragged by \ntheir electric charge.\nSort of a ball and chain thing.\nElectrons in metal are "free"; they slip rather freely across all the \natoms, and do not need to drag one around with them.\nSo, carrier mobilities in ionic liquids are some orders of magnitude lower \nthan carrier mobilities in metals.\nSo their resistance is higher.\nIf you had a snail-trail of salt-water or molten salt with the same length \nand cross-section as a metal wire,\nit would use up half the voltage and get hot trying to pass one tenth the \ncurrent the wire can handle.\nIn a metal, each metal atom contributes about one mobile electron that \nhelps the current flow.\nIn molten salts like NaCl, every atom has a + or - charge and contributes \nto the current flow.\nSo there are just as many carriers per unit volume as in a metal.\nBut in water-solutions of salts, the salt is a minority.\nUsually less than 10%  of the solution is ions, so that makes the \nconductivity even poorer.\nThat is part of why we will never make our power lines out of seawater in \npipes.
838918
Its a decomposition equation. In essence Sodium Chloride (salt) breaks down into the Sodium ion and the Chlorine Ion. Chances are it's talking about NaCl when it's an aqueous solution (a solution who's solvent is water)
945741
Due to the fact that this salt is found as a hydrated salt (first Na2SO4.10H20 and then as Na2SO4.7H2O, so, with the increase of temperature it looses moisture (water)). When the Na2SO4.10H2O is heated the solution of this compound decreases because a solid phase and a liquid phase are formed after the initial heating.
763435
It will decrease if the solubilizing of the solid is endothermic, and increase if it is exothermic.\n\nIn most cases, solubilizing is endothermic (it takes heat to break up a solid and get the ions to stay in solution) so it will generally decrease, but this is not always the case.
1097925
yes... it's called reverse osmosis.\n\nBasically it pushes the sea water through a filter that doesn't allow the salt to pass.\n\nAlso there is turning the water into steam and then condensing it into liquid again.  This leaves the salt behind as it is converted to steam.\n\nDesalinization is usually expensive and not very efficient either.
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.
731293
sodium & chlorine to make NaCl, table salt
797061
yes.  saltwater is salty, meaning it has a lot of ions.  Lots of ions conduct electricity.
1108709
Safe to drink... or safe to be around in the presence of an electrical current?\n\nWell zero conductivity would be ideal, because it would be evidence of zero ion presence in the water.\n\nHowever the water could be very conductive and still be "safe" to consume. Salt (Na-Cl) for instance mixed into the water would make turn the water into an ionic solution. It is therefore now has conductivity. But as we all know... we can consume salt water "safely" if it is consumed at appropriate amounts.