What  chemicals in untreated water makes 304 type stainlees steel to become porose and water to leak?
930912
What you are really asking, is what chemicals in water can corrode Chromium and Vanadium, since that is what makes stainless steels 'stainless'.\n\nBasically, anything that will form free radicals can react with these metals.  Common culprits include Chlorides, Flourides, and the like,  but also such things as (bi)carbonates and nitrates can form weak acids that can attack Cr and Va.
814096
in order:\nammonium chloride\ncalcium nitrate\nIron(III)hydroxide(this will turn to Fe2O3 fast which is rust)\nSodium carbonate\npotassium sulfate\nammonium sulfate\nI think you mean: Ca(NO3) with this one which is calcium nitrate\nand the last one is magnesium nitrite(not nitrate)
834008
It all depends on how you make it.  Usually you don't want it to be porous, and try to make  it in a manner that prevents voids (holes, pores) from forming.  On the other hand, you sometimes may want porous stainless steel (for a membrane support, a filter, a bubbler, or a muffler), and make it accordingly.  \n\nThe stainless steel most people encounter day-to-day, such as you would find in a fork or in a sheet, is effectively nonporous.
1087486
Flouropolymers are inert, meaning they don't react with other chemicals.  They also have the lowest known friction of any material (run your finger or slide a glass across a well varnished bar or table and you'll know what I mean)  They Contribute to paint's stain resistance by forming a sort of shield inside the paint (because they don't chemically react) and also give you some very shiny paint.  You can find a lil more about different polymers at my source link...  Good luck
1908
Nitric acid is a highly oxidizing acid, and when combined with stainless steel will promote oxidation of the chromium content of the steel, creating a film that will protect the steel from further attack by the acid. Stainless steel is a recommended container for nitric acid. \n\nHydrochloric acid is less likely to undergo this interfering oxidation reduction reaction, leaving the steel unprotected, so even though it is a weaker acid, it will dissolve the steel. \n\nSometimes the turtle wins the race.
1172374
You could try passing it through carbon, but that may also remove iron.  You would need to try it with known solutions.\nYou may need to go to AA or ICP analysis.
412852
Your crucible is leaking in oxygen, and the oxide content is building up in your metal
943865
-tapwater- sucrose, fructose, fibre, micronuromosees,\nacid, natural flavors, salt, other natural flavors, microcepholopodousoes, (usually)\n\n-sea water- sucrose, fructose, glucosefructose syrup,\nacid, natural flavors, salt, other natural flavors\n\n-purified water- salt, natural flavors, some trace ammounts of weevil borings.\n\nhope your report reflects all the hard work you put into it!!
1002183
Concentrated Nitric Acid and copper.  Be careful.  Nasty stuff... really!
983710
H2SO4 will dehydrate and remove water.\n\n\n(CH3)2 CH - CH2-CH=CH-(CH3)2
116095
The type of coke used (diet coke, regular coke, sprite, pepsi, ...) matters very little since they are all pretty much the same (excluding flavor).\nSodas are slighly acidic since they have carbon dioxide dissolved in them (which forms carbonic acid in water).  However, I seriously doubt there is enough of that weak acid in solution to dissolve an entire nail.  It may be corroded, but a single can (or even a 12 pack) I dont think will be able to dissolve it in any short period of time.\nAt some point, the effects of the acid reacting on the iron will probably be overshadowed by the effects of the water rusting the iron instread.
43302
Rust is the substance formed when iron compounds corrode in the presence of oxygen and water. It is a mixture of iron oxides and hydroxides. Rusting is a common term for corrosion, and usually corrosion of steel.\n\nIron is found naturally in the ore hematite as iron oxide, and metallic iron tends to return to a similar state when exposed to air, (hydrogen, oxygen, nitrogen, etc) and water. This corrosion is due to the oxidation reaction when iron metal returns to an energetically favourable state. Energy is given off when rust forms. The process of rusting can be summarized as three basic stages: The formation of iron(II) ions from the metal; the formation of hydroxide ions; and their reaction together, with the addition of oxygen, to create rust.\n\nIron is the main component of steel and the corrosion of steel is observed more frequently, since iron is rarely used without alloying in the present day.\n\nWhen steel contacts water, an electrochemical process starts. On the surface of the metal, iron is oxidized to iron(II):\n\n    Fe → Fe2+ + 2e-\n\nThe electrons released travel to the edges of the water droplet, where there is plenty of dissolved oxygen. They reduce the oxygen and water to hydroxide ions:\n\n    4e- + O2 + 2H2O → 4OH-\n\nThe hydroxide ions react with the iron(II) ions and more dissolved oxygen to form iron oxide. The hydration is variable, however in its most general form:\n\n    Fe2+ + 2OH- → Fe(OH)2\n    4Fe(OH)2 + O2 → 2(Fe2O3.xH2O) + 2H2O\n\nHence, rust is hydrated iron(III) oxide. Corrosion tends to progress faster in seawater than fresh water due to higher concentration of sodium chloride ions, making the solution more conductive. Rusting is also accelerated in the presence of acids, but inhibited by alkalis. Rust can often be removed through electrolysis, however the base metal object can not be restored through this method.\n\nHydrated iron oxide is permeable to air and water, meaning that the metal continues to corrode after rust has formed. The iron mass eventually converts entirely to rust, and disintegrates.
708657
Vinegar is an acid and is also a catalyst for corrosion of iron\n\nOil is hydrophobic and will prevent oxidation from occurring, therefor preserving the iron\n\nWater will promote oxidation and in turn degrade the iron to iron oxide (rust)
531919
errrrrrr Oxygen, hence rusting is stricly called oxidisation.  But perhaps you should inform your questioner that Water is actually made up of Hydrogen and Oxygen, therefore some of the answers are obsolete.\n\nThink about the fact that metalwork inside a waterproofed building goes rusty as well as that outside.
550059
Rust is the substance formed when iron compounds corrode in the presence of oxygen and water. It is a mixture of iron oxides and hydroxides. Rusting is a common term for corrosion, and usually corrosion of steel.\n\nIron is found naturally in the ore haematite as iron oxide, and metallic iron tends to return to a similar state when exposed to air, (hydrogen, oxygen, nitrogen, etc.) and water. This corrosion is due to the oxidation reaction when iron metal returns to an energetically favourable state. Energy is given off when rust forms. The process of rusting can be summarized as three basic stages: The formation of iron(II) ions from the metal; the formation of hydroxide ions; and their reaction together, with the addition of oxygen, to create rust.\n\nIron is the main component of steel and the corrosion of steel is observed more frequently, since iron is rarely used without alloying in the present day.\n\nWhen steel contacts water, an electrochemical process starts. On the surface of the metal, iron is oxidized to iron(II):\n\n    Fe → Fe2+ + 2e−\n\nThe electrons released travel to the edges of the water droplet, where there is plenty of dissolved oxygen. They reduce the oxygen and water to hydroxide ions:\n\n    4e− + O2 + 2H2O → 4OH−\n\nThe hydroxide ions react with the iron(II) ions and more dissolved oxygen to form iron oxide. The hydration is variable, however in its most general form:\n\n    Fe2+ + 2OH− → Fe(OH)2\n    4Fe(OH)2 + O2 → 2(Fe2O3.xH2O) + 2H2O\n\nHence, rust is hydrated iron(III) oxide. Corrosion tends to progress faster in seawater than fresh water due to higher concentration of sodium chloride ions, making the solution more conductive. Rusting is also accelerated in the presence of acids, but inhibited by alkalis. Rust can often be removed through electrolysis, however the base metal object can not be restored through this method.
729728
Sodium Hydroxide----NaOH\n\nWhich is the same thing as lye.\nIt is commonly used in drain uncloging agents.
43725
Bleach\nsodium hyporchlorite has HCL in it\nMuritic acid