Inorganic Chemistry

i went over to my friends house, and he added sulfuric acid to potassium permanganate (i dont know if it was accident or purposely) but it turned liek green. THen when he dripped liek a drop of ethanol on it like popped and cught fire- like it lit instantly on contact. why did it do that and what happened?

EDTA ( ethylenediaminetetraacetic acid) is a " chleating agent" that can bond with entities like Ca2+ forming complex ions. Calcium and magnesium ions are the cheif causes of water hardness. EDTA molecules bind hard-water ions , removing them from solution. A common indicator used in EDTA titrations is eriochrome black T (EBT), which changes from pink to blue at a single endpoint, when all calcium and magnesium ions have reacted with EDTA. EDTA titrations are preformed at a pH of 10. I will determine the concentration of calcium ions through titration. After this titration i will alter the sample and i must plan and write a procedure for modifying the concentrati…

I obtained some Ammoniuim Chloride, I was wondering if there where some cool experiments with it ?

I added an excess of sodium bromide to a solution of copper sulfate to produce this complex ion. I think that's how it's supposed to look... it's a deep purple. If I was to evaporate the water would I get a mixture of sodium sulfate and sodium tetrabromocuprate(II)? Would it be possible to get one to crystallize before the other?

Could any one tell me the process of experimentally increasing and deacreasing calcium concentration. EDTA will be titrated with milk, water, and bodily fluid to find the Calcium concentration. I need to alter the sample to either increase the concentration of calcium or decrease the concentraion and titrate the sample again with EDTA to find the new concentration of Calcium

I have a quick question. I would like to remove the copper coating from a modern U.S. Penny in order to obtain the zinc inside, but with the form of a penny. Is there any easy, relatively safe, way to remove the copper without damaging the zinc? I was thinking of electro-plating the copper off of it, but I figured that the zinc would react with the copper and displace it from solution. Is there a simple chemical way? Could I just soak the penny in bleach, and every day or so take it out and remove the copper chloride/hypochlorite that builds up on the surface until all the copper is gone? I'm just having some cerebral flatulence with this one.

I'd like some information about the strange ionic compound caesium auride to complete a Born-Haber cycle about its formation. I thought it would make a change from NaCl! Does anyone know its enthalpy of formation or its lattice enthalpy? I've looked in every text we have and scoured the web, but without luck. For the curious, Here's what I do know: CsAu is ionic, with the Au- anion in a lattice that closely resemble CsCl. The Cs-Au distance is 369 pm. Atomisation enthalpies are 78.7 kJ/mol for Cs and 369 kJ/mol for Au. The ionisiation energy of Cs is 375.7 kJ/mol and the electron affinitiy of Au is -222.8 kJ/mol.

How would one go about collecting chlorine gas? How would I get it, and how would I store it? :edit: I'm not gonna kill anyone :edit:

Oxidation sattes, they confuse me. What exactly are they? i was lookin at this part of woelens site V and the manganese and iron oxidation states.. - (http://81.207.88.128/science/chem/exps/bleach/index.html) confused me. could someone explain the oxidation states and how it haopens, and wat the products are. thx

I'm sure I asked this before, but can't remember/find the answer. So, well, I can ask this several ways, complete the pattern: CaCO3 --> limestone --> calcium carbonate H2O --> water --> ______? It's not hydroxide which would be OH, its not a dioxide because there's only 1 O... so what is the chemical name (is that the right phrase?) for water? [edit] In the title, I used a capital O and then it changes it back, dunno why, I've tried it 4 times now, it won't stay capitalised!!!

I would like to make H202 with very cheap chemicals. Also NaI ! Does someone knows a good method ??

I want to share with you a nice experiment with a colored gas, which contains chromium. It looks like bromine, but in reality it is a very volatile metal-compound! http://81.207.88.128/science/chem/exps/volatile_chromium/index.html Have fun. If you repeat the experiment, please be very careful. The gas is really toxic!

Okay, so I've got a mixture of calcium carbonate, microcrystalline cellulose, stearic acid, croscarmellose sodium, and sodium laurl sulfate. I want to get it as close to pure calcium as possible, what should I do?

Does it make sence to say that elemet zero of: Isotope 0 is a vacuum? Isotope 1 is a neutron? Isotope 2 is a dineutron? Isotope [math]\infty[/math] is a neutron star? I propose we call them goneMoosium, smallMoosium, bigMoosium and massiveMoosium respectively.

Hi, how does one go about getting a sample of sodium element? It only has to be pure enough to have some fun with in water . I read something a while back about heating to 500 degrees C in Argon, that doesnt sound like I would be able to do that. Does anybody know of a simple method other than purchasing it?

How could I get HNO3 from Ammonium Nitrate (if it is possible).

Because each period of the periodic table of elements has less gases would we eventually have only metals after like 150 or so? Or is there something about the noble gases that would stop this trend?

I was wondering with all the properties ive learnt about acids, why is it that H3PO3 is more acidic than H3PO4 when its got less electronegative atoms bonded to the central atom plus only two H's are bonded to the oxygens as opposed to H3PO4, can anybody explain this property to me?

I believe this could work but I don't know at what temperature (I believe that is pretty high). 4 Na3PO4 + 5 C ---> P4 + 5 CO2 + 6 Na2O Does someone know other reactions, easier?

I'm looking into electrolysis (using table salt for the electrolyte) and I'm finding that the electrodes don't last very well and they, of course, oxidize very readily. I've tried copper, steel (many kinds available), brass, lead, and even gold plated copper, but none of them stand up. Can anyone think of something that would work better? I have access to a lot of things: tin, lead, steel, iron, copper, brass, alluminum, and more. Also, I'm trying to find out what affects the rate of electrolysis the most, ie, shape of electrode or amount exposed, aspects of the power supply, temperature (warmer water allows more gas to dissolve, O2 is completely dissolved). Th…

Hi. Any suggestions on which household chemicals can be used to restore the bright finish to aluminium parts ? It is for my automobile engine; aluminium parts used to be shiny and after washing with degreasers lost its new appearance, dull grey now. Nothing of real concern; but would be great if can be restored with something from under the kitchen sink pile of stuff... ...and your brains... Miguel

hey guys erm i know what iron oxide and rust actually is but i was wonderin does neone have a diagram of the reaction that takes place to get rust, or a link wud be fine.

If i use HCl as the electrolyte in the electrolysis will i produce chlorine gas?

My question is: Can an Fe(III) cluster type [Fe(III)3(mu3-O)(O2CR)6]+, where O2CR are monocarboxylic acids groups, react with dioxygen to produce a radical species able to initiate radical reactions, such as polymerization or else? I have been browsing the literature but besides the reaction of Fe(III) ions with peroxides yet no answer to my question. I thank in advance for any suggestions Regards, Fabrizio

Anybody got a good method of effectively collecting the chlorine gas from a bleach/HCl reaction into a glass ampoule. I can't figure out how to minimize the loss of Cl2 into the atmosphere.