Inorganic Chemistry

Hi guys, Just wanted to know for sure if selenium(IV) hydroxide complexes exist? I thought coordination chemistry involved transition metals as the central atoms in hydroxide complexes.. Is it possible for Se4+ to act as some sort of metalloid central atom? Thanks, Scott btw I'm new to these forums so i'm sorry if this is in the wrong section

Today, I found myself working in a commercial kitchen, I used to be a bar/restaurant manager and so occasionally help out old work colleagues. Whilst standing in-front of the gas stove, I accidentally spilled some water onto the lit gas burner ring, which spontaneously combusted in a bright orange flame. Intrigued, I repeated splashing water onto the flame and each time, the same resultant orange flame occurred. Sometimes the flame would be nearly eight inches high. There were no other flammable substances on the stove, so why the combustion? The only explanation I could think of would be that the hydrogen and oxygen were somehow separated by the heat of t…

Hi, This is from a part of solution from the list of problems I have to do for Analytical Chemistry class. This one line perplexes me, and I'm basically :doh:ing myself (smacking myself in the forehead..) because I can't understand it. The question is to find the fraction of association ([math]\alpha[/math]) for [math]1.00 \times 10^{-12}[/math] M sodium acetate. Now, the solution says, "For [math]1.00 \times 10^{-12}[/math] M sodium acetate, pH = 7.00." When I tried to use the equation for fraction of association, I ended up as x (the variable for [bH+] and [OH-]) as zero. Something isn't right, and I wonder if this is conceptual thing that I am missing out. …

Predict whether an aqueous solution of each salt produces a solution with a pH >7, <7, or = 7. If the pH >7 or <7, write an equation that justifies your prediction. SALT: AlCl3, K3PO4, Na2SO4, Ca(CH3CO2)2:doh:

Hi, I have some 3% hydrogen peroxide (H2O2) and I'd like to concentrate it to a more useful concentration. Right now I'm thinking of boiling off the extra water. I've read that at high concentrations of H2O2 decompose extremely exothermically when they're heated (resulting in a steam and very hot O2 explosion), and I've also heard that the peroxide is stabilised somewhat in an acidic environment. My three questions are: -What is a safe concentration to boil the peroxide to? -How will an acid affect the stability of the peroxide? -The only pure acid I have around is sodium bisulphate (NaHSO4). However, when I mix the peroxide and acid, I see bubbles. Do hydroge…

I'd like to make some hydrochloric acid or sulphuric acid for an experiment, but unfortonately many of the methods I've read so far either use materials which I don't have access to, or are questionable as to whether or not they will work. I've put together a list of chemicals I DO have access to (not including regular household chemicals, like NaHCO3 and NaCl). -Ammonium Chloride (NH4Cl) -Sodium Bisulphate (NaHSO4) -Calcium Hydroxide (Ca(OH)2) -Hydrogen Peroxide (H2O2) -Calcium Chloride (CaCl2) -Sodium Dichloroisocyanurate (C3Cl2N3NaO3) -Ammonium Iron (III) Sulphate 12 Hydrate (NH4Fe(SO4)2) I also have a graphite rod that could be used as a fairly unrea…

i bought some 31%hydrochloric acid from the home depot for the first time and i notice its has a tiny bit of greenish color to it is this normal?

Hello all, I am looking for a supplier of red phosphorus in Australia, as I don't think it is possible to ship internationally. Any help would be greatly appreciated. Elliot

Hi. As I know nothing in the subject, am asking if isopropyl is inorganic, and which other alcohols are produced from inorganic chemicals not derived from petroleum. Thanks, Miguel

Does anyone knows how I could make some Bromine with Sodium Bromide and sulfuric acid and MnO2. I also need to know wich glassware I have to use. (It should be done in a lab).

Hello. I recently did an experiment for a science fair in which I tested the effects of fly ash in concrete on the strength of the concrete. I tested 0%, 25%, and 50% amounts of fly ash in the concrete. All of the research I've collected says that fly ash increases the strength of concrete. However, my results displayed the opposite. My control group of just Portland cement and no fly ash was the strongest and the 50% concentration of fly ash was the weakest. Each test group underwent hydration for a time of 3 days. Any ideas of why this happened? Thanks!

I am very interested in in elements and there compounds. so as i collect elements i also take some of that element and make some of its compounds for sample collecting. it may not sound like it but its a really fun hobby for me. But now i want some different acids so i can make more compounds. I am done with common acids like Hydrochloric acid, acetic acid, sulfuric acid, and citric acid. So here is my question does anyone know of some acids i could get to make some compounds for my hobby. Here is two examples of the kind of acids i am looking for Lactic acid and gluconic acid. So if anyone knows some acids i can use to make cool compounds pl…

HI So you know when you add copper to vinegar it does nothing but when you add 3% H2O2 to the vinegar and heat it reacts with copper to form copper acetate. But i just read that a solution of acetic acid and H2O2 is peracitic acid ok so does that mean the copper acetate i have made is really copper peracetate. And if so what is the difference. Thank you.

When people speak of lattice. What are they referring to exactly. Like in spin-lattice relaxation what is the "lattice". Does it mean the spin of the electron and the environment? Environment being the rest of the molecule or the surrounding molecules or everything?

Can anyone tell me what T2g means. T is triply degenerate and g is "even" so what is 2? Also, what do the numbers in A1 and B1 and B2 mean. Also what do the letter stand for? If T is for triply degenerate then what does E for if it means doubly degenerate as doubly clearly doesn't start with e. Merged post follows: Consecutive posts mergedOne more thing can someone give a good reference for generating character tables. The math behind it and all that good stuff.

I cannot convince someone to stop using charcoal lighter fluid in their fireplace. I think this isn't right - could someone provide proof as to why this shouldn't be used in a fireplace? He cannot convinced by common sense alone. Mind you this man has a disabled daughter in his house.

Anyone know what people refer to when they say "free" Iron or "free" copper in cells? They always use "free" but don't say what "free" is. Is it just that it depends on the environment? In a similar environment is copper and iron going to bind similar ligands or not? In a cellular environment what are those ligands that constitute the "free" form of metals? This is not a homework question I'm just wondering because I'm sifting through papers and no one actually says what is "free".

Hi, Its revision time again! I came across this metal complex [Co(NH3)5 (NCS)]2- This implies that the Co is in the -1 oxidation state and therefore a d10 species. My question is this, how can a metal have a negative oxidation state and still form a complex. Surely the negative charge would repel the incoming, potential ligands; especially the anion thiocyante. Also if its a d10 species, it will have no CFSE and therefore be very labile and will exchange with the solvent it is present in...

Hey guys. I posted this in the homework forum, and I am sort of in desperate need of a response. I understand if this post is deleted. So we just learned how to do ICE charts for equilibrium, and with this problem in particular I am having some difficulty..I don't know if I set the equation up properly. Thanks a bunch A mixture of 0.546 mole of carbon monoxide and 0.407 mole of bromine was placed into a rigid 1.21-L container (i.e. these are initial amounts) and the system was allowed to come to equilibrium. The equilibrium concentration of COBr2 was 0.246 M. What is the value of Kc for this reaction? Use an ICE table to help you. Round your answer to three significan…

please hurry i need some flexible tubing for gases to pass through it like (HCL gas) (chlorine gas) and (nitrogen dioxide) and i dont want it to react with the plastic tubing so what kind of plastic tubeing should i get. rember it must be flexible:D please hurry:D

TITLE EDIT: why microwaves heat food and visible light doesn't? ok, here's my first question. in the (recent) past I've read a book of introductory chemistry, and one of introductory astronomy, but I have many practicaly questions left, and here is the first: so, the shorter the wavelength the more the power the photons carry, right? so if microwaves are longer than, say, visible light, why when I put my meal in the microwave oven it gets hot and it doesnt get how while leaving in the kitchen or elsewhere with the visible light? maybe because they push on the oven many many beams? so then why don't use visible light wavelength or infrared or some othe…

with a flexographic press we apply naoh + water to the metallized (aluminum) side of the polyester film this is done with a rubber roller then the material goes to a washing bin and then drying before rewinding the material on a roller. i want to find a method were I can avoid the washing. my idea is to apply the naoh + water and on the next station something else that will do two things; neutralize the reaction and keep that area of the film transparent so we do not see after drying any salts making this window hazy. the last step is that on the metallized side of the film we laminate another film to it. Does the demetallized side ends up protected and it is…

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Let x be the effective concentration of the ion providing the electrode potential; y be the effective concentration of interfering ion; and xnx + ne- --> x The resulted emf after ion interference is given by: E = E0 + (RT/nF)(ln(x+y)) So then how could the equation be explained qualitatively?