What is the old name for hydrochloric acid, used to remove calcium carbonate deposits in toilets?
104884
Muriatic acid.  It is still sold under this name in hardware store and building material outlets.
410501
i really like loreal kids chlorine and dirt remover. it's works great, smells good, and it's inexpensive!
313942
I forget my organic chem but\n\nammonia, calcium carbonate - a base is used to neutralize an acid - a base donates electrons and an acid collects them (i think, or vs/vs) \n\nboth can be used to separate other chemicals, or remove chemicals from mixtures\n\nAcids are often used as a catalyst to start a reaction like when producing explosives - and can be very dangerous\n\ncommon ex - bleach(acid) mixied with ammonia(base) produce a poisonous gas and heat which can actually cause sever damage to lungs
250358
Use baking soda toothpaste on a cotton swab. You need only a small amount. Arm and Hammer Toothpaste is the best solution. It also works on car batteries and their terminals.\n\nIf you need a more liquid solution, try some Hydrogen Peroxide. it is also a base and will neutralize the crystalized acid.\n\nDo not unse chlorine bleach. It may neutralize the acid, but other side effects could ruin the watch.\n\nDo not use water, it will ruin your circuitry.
458582
Nuetrogena.I used to use it all the time but i don't need to anymore.
461443
if you are having trouble with hard water scale build up on the walls of your spa, a water softner will help you.  If your bromine level in your spa is high you should use a dechlorinator.
729728
Sodium Hydroxide----NaOH\n\nWhich is the same thing as lye.\nIt is commonly used in drain uncloging agents.
952146
The first part of the question gives you the information you need to determine the "calorimeter constant", or the amount of heat required to change the temperature of the whole calorimeter set-up by 1 degree.\n\nThe calcium carbonate/HCl stuff is the reaction whose enthalpy change you are trying to determine, using the same calorimeter as before.  When you combine calcium carbonate and HCl, you'll get a reaction that produces CO2 and leaves you with a solution of calcium chloride.  So the overall reaction that you're looking at is:\n\nCaCO3 + 2 HCl --> CO2(g) + H2O + CaCl2\n\nCalcium carbonate will only decompose to CO2 and CaO when you heat it--not when you react it with an acid.\n\nHope this helps....I'll let you do the calculations.
337907
Citric acid and products like Biocid have been used.\n\nhttp://www.ultra-chemical.com/index2.htm
72573
If you are working in a chemical lab, you should have gotten this answer during your safety training.  However, in the case of most strong acids (HCl, HBr, HI, H2SO4, etc.) you should flush with lots of water.  If irritation persists, you should seek medical attention promptly bring with you the MSDS for the chemical you spill on yourself.  If you spilled HF, you are in deep trouble.  However, I doubt you could have gotten access to HF without knowing the appropriate precautions to take.\n\nMedically, some acids are used in the removal of warts (among them is trichloroacetic acid).  The alternative there is freezing them off with liquid nitrogen.
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Vinegar (acetic acid) is good for cleaning kitchens, and can the mineral deposits out of a shower head or coffee maker.  Balsamic vinegar is also very good in a salad.\n\nCitric acid is naturally found in citrus fruits such as oranges and lemons, and has a pleasing smell, as well as some cleaning power.  It is a frequent ingredient (as sodium citrate) in sour candies.\n\nPowerful acids can be used to open a clogged drain.\n\nBoric acid can be used to kill ants and roaches.\n\nAscorbic acid (Vitamin C) is essential to good health.  Aspirin is also a acid compound.
260032
The original was just electrochemical extraction.  THe current Haber process (called HGP - do a google search) has promise.
318669
The obvious answer "by destillation" is technically challenging. I know of a Danish firm EnvoTech ApS that built systems which concentrate problematic waste water by cyclical destillation with very little energy loss,  which would help concentrate the remaining acid, but only up to a degree where the stainless steel the system is built from begins to corrode, and without removing the discoloration. You'd get quite good water condensate to reuse in the process, which isn't that helpful for your problem...\n\nThe foamy particles might be removable by letting the water go through a flotation trough. The resulting acid will still be weak and brown, though.
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Baking soda and vinegar are both wonderful natural cleaners!  Baking soda works well on stainless steel, porcelain, counters, etc.  Vinegar is wonderful on windows.  Together they make a good (strong) drain cleaner & freshner - pour bs down the drain then add apple cider vinegar - works great!
468452
CO2 +H2O<-->H2CO2<---->HCO2 + H\nCarbonic Acid can react with Hidrogen ions (which lower the pH of the blood) to form bicarbonate; which can be later removed by the system in the kidneys or through respiration.  The formation of bicarbonate removes an H ion from solution thus helping mantain pH equillibrium in the body at around 7.4
958951
Sodium Chloride = Table Salt\nPotasium Chloride = buffering salt used by all animals and plants\nSodium hypochlorate = Bleach\nSodium BiCarbonate =  Baking soda\nSodium Hydroxide = lye   (strongly caustic .. basic solution used in manufacturing and synthesis of many compounds\non, and on, and on
30238
No, HCL has nothing to do with the number of moles of CaCO3 that you used.  So you asume you used enough HCl so that all of your CaCO3 is dissolved.  All you need to do is devide 0.5215 g  with the molar weight of CaCO3 and you'll get your number of moles.\n\nHope this helps,\nUltimeaciax