What is the most corrosive acid and base?
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The corrosive properties of an acid or base depend on the concentration as well as the chemical (maybe dissolved in water).  If you put your finger in sulfuric acid, it was probably not that concentrated.\n\nNitric acid, hydrochloric acid (this is in your stomach), and fuming sulfuric acid (it gives off sulfur trioxide) are all very strong acids.\n\nIf you want to dissolve gold or platinum (very hard), you need a mixture of hydrochloric acid and nitric acid (aqua regia, read more on wikipedia).\n\nSodium hydroxide (lye) and sodium hypochlorite (bleach) are very caustic bases.\n\nIf the question is what is the most basic or acidic substance, it is hard to find a limit.  In organic chemistry, some useful compounds for synthisis are lithium-alkanes, such as n-butyl lithium.  It is an incredibly strong base because its conjugate acid, butane, is an incredibly weak acid.
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Dissolved minerals in tap water and surfactants such as oil reduce the surface tension, so rainwater being the most pure should have the highest surface tension.
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Something that requires water in order to become a true Base\n\ne.g. CaO + H2O -> Ca(OH)2
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a. N2O4\nb.PCl5\nc.NF3\nd.S2Cl2
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* Arrhenius acids and bases are the traditional acids and bases.  Simple examples of a weak acid is vinegar.  A weak base would be.. (the only thing that comes to mind is ammonia but it's not really the most safe thing and there should be weaker bases)\n\n* oxide  of an element = iron oxide or rust\n\n* weak organc acid - vinegar (acetic acid) would also qualify \n\n* compound composed of an alkali and a halogen = NaCl or table salt \n\n* solid product is calcium carbonate or chalk\n\n* polymer is PVC, most commonly found in piping/plumbing patio furniture, etc\n\n* substance with density greater than 1, anything that sinks in water like some kind of metal.
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Mercury\nIts liquid at room temperature so it has to be.
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Anything that dissociates well in water. Any strong acids or bases are good, so are salts of those since they exists as ions in solutions. Weak acids and bases are weak electrolytes, since they don't dissociate as well. The most common is probably table salt, NaCl. Potassium by itself is just a metal the reacts violently with water and is not a good electrolyte, but potassium compounds are, as are sodium compounds. \n\nNote: Remember, just because something dissolves well doesn't mean that it is necessarily a strong electrolyte., it must also dissociate into ions. Sugar dissolves in water, but since it doesn't separate into ions it is not an electrolyte.
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Sulfuric Acid- just learned that today... check the link for more info...\nit is a VERY strong acid!
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Francium and cesium are about 0.5.\nFluorine is highest at 3.9-4.0 (by Pauling's estimate)
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the acids are carboxalic acid and  carbonic acid
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acid\ngas naphtha\noxygen  and hydrogen\nacid\nacid
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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.
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mostly acids. do your own homework
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Highest boiling point is Na3PO4 because of the most no. of ions in solution.(also has lowest freezing point)\nHighest freezing point is Sucrose because of the least no. of particles in solution.(also has lowest boiling point)
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Any acid.  Vinegar is the best probably.
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HNO3\n\nIf you couldn't answer this question, you must be a real noob in chemistry!!  Well, for other times, here's the way to differentiate betwee acids and bases.\n\nAcids:   acids can be easily identified by the hydrogens they contain.  Most acids have their hydrogen in the beginning of their formula.  HNO3 can be easily identified as an acid: it is commonly called nitric acid.\n\nBases:  most bases can be identified by the (OH) group at the end of their formula... therefore, we can immediately label b) and d) as bases.   \n\nNow here, NH3 is kind of tough to define with the definitions given above.   I believe that the proper explanation is out of your scope for know (from what I can deduce).   So, you'll learn that later on.  But for your info, NH3 is ammonia, the stuff they use in cleaning fluids, and it is basic.\n\nHope this helps.
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1. sodium hypochlorite\n2. hydrogen chloride\n3. concentrated sulphuric acid\n4. oxidising it, for example with potassium manganate(VII).\n\nIf you've done the other 96, well done!