Inorganic Chemistry

Here's the simple voltaic cell that I have... One copper electrode and one zinc electrode immersed in a sulfuric acid electrolyte. There is an external load between the electrodes. The sulfuric acid ionizes into hydrogen ions and sulfate ions. H2SO4 ---> 2H+ + SO42- The sulfate ions migrate to the zinc electrode and oxidizes the zinc. Zn ---> Zn2+ + 2e- The 2 extra electrons stay on the zinc electrode and build up a potential. The hydrogen ions migrate to the copper electrode, strip 2 electrons off each copper, and form hydrogen gas. 2H+ + Cu ---> H2 + Cu2+ The excess positive charge on the copper electrode builds up a potential that…

Hi, Today in my Inorganic Chemistry Experiments class we conducted the experiment: 'Preparation and analysis of the composition of ferrous ammonium sulphate'. At the end of the experiment we dissolved 1g of our ferrous ammonium sulfate crystals in pure water and then added 1mL of 6mol/L HCl and 1mL of 1mol/L KSCN solution. Extra pure water was added to bring the solution in the test tube up to 25mL. We then made a semi-quantitative colourimetric measurement to determine if it was I, II, or III 'colour reagent level'(is that correct? maybe I translated it wrong). My question is: Is the 'colour reagent level' the same thing that is indicated in, for example, ammon…

"Reaction of WCl6 with CO under high pressure and in the presence of Na gives an anionic carbonyl complex A which shows 2 CO stretches in the IR region. Further reaction of A with CO under acidic conditions leads to complex B, a neutral carbonyl complex with a single CO stretch in the IR spetrum. Identify compounds A and B and draw their structures. Perform an electron count for A and B." Really not sure where to begin on this one if someone could please point me in the right direction?

So I got some precups out of this 7.3 IDI diesel engine I'm rebuilding. These cups to my knowledge are made out of Inconel, a very,very hard abrassion resistant and corrsion resistant alloy. They are hard as hell but also very brittle. I don't understand why they used a brittle metal for a high heat and high pressure application, I think a softer metal like mild-steel would do better as it will expand slightly rather than cracking. It also is left unharmed by hydrochloric acid and Lye. So the question is: Why a very hard brittle metal rather than than a softer metal in a high pressure situation? I think even Titanium would perform better than Inconel as it wil…

How were chemists such as Keklue able to comprehend and illustrate the structure of benzene without IR or NMR analysis? How did any chemist for that matter figure out chemical structures. Any books on this topic would be appreciated, it really interests me! ~ee

Ok, I've never done this before (use a forum website). I'm in school and we have to conduct our own demonstrations for 4th graders. I am using liquid gallium an I want to pass an electric current through it using immersed electrodes. However I don't know what electrodes to use as I know gallium isn't exactly "friendly" with most other metals. I don't know what materials it might be friendly with. So what electrodes should I be using. I'm in middle school and very new to this.

I know it this is not very efficient ( I can buy uraninite legally ) , however I would like to attempt to extract uranium oxide from glass by dissolving it in hydrochloric acid. I believe I will end up with uranyl chloride salts ( which are photosensitive ). I am not a chemist, however, and I am stuck on how to extract the uranium oxide out of the uranyl chloride . Any ideas ?

1) Is it something to do with the fact that chlorine is more electronegative than iodine is, therefore the chlorine nucleus would feel some force of attraction for the slightly positive hydrogen atom in the water molecule? 2) One website mentioned that chlorine was soluble because its electrons were susceptible to creating induced dipoles -- but using that logic, wouldn't iodine be more soluble as it has a greater sized electron cloud?! 3) Also, the Cl-Cl bond is supposedly stronger than the I-I bond. Any ideas?

Topic Title pretty much says it all.

I am building a laser induced breakdown spectroscopy system. Essentially it's the same thing as on the Mars lander - shine a laser at a rock and a spectrometer tells you what elements are present. I have an S C Technology PCM401 Plasma Chemistry Monitor that is a spectrometer with software to detect 80 elements. Unfortunately I don't have the installation floppies and so far I've failed to create a bootable image of the hard drive. It was made in 1997 and it runs under Win 95. I now have a problem with the PSU and I'm worried it may have corrupted the hard drive. If you know anyone in industry who might be able to locate the installation floppies I'd be eternally grateful…

Can some one explain why pyridine-metal bond is shorter than secondary amine-metal bond in picolylamine complexes?

So I know that the dissolution of calcium chloride in water is exothermic. I also know that calcium chloride can be used to 'dry' organic solutions by removing water, indicating that it still has a high affinity for water over other solvents. What I was wondering is whether the reaction with water is still exothermic when it is already dissolved in another solvent. And if so, is it lessened at all? I.E if I added water to a solution of calcium chloride in anhydrous ethanol, would an exothermic reaction occur? And, if so, would it be less exothermic than the addition of water to the solid salt? (Forget the fact that the extra liquid in the ethanol example might make …

Hello, I am engaged in scientific activity in the synthesis of optimal control systems chemical reactors. It was proposed to investigate the management system with nonlinear liquid-phase reaction kinetics of this type. Need to find the kinetics parameters (rate constants, activation energy) for any reaction similar in structure to that which is really implemented in the chemical industry. Important for me to show that the constants are not taken at random, and are attached to the real processes. I am not a chemist, so if anyone doing this please give a link to the article with the kinetics parameters , or at least the reaction. Many thanks for your attention!!!

Hydrogen is below Lead in the activity series then how does it displace lead from lead dioxide?

Hi, there... i need your kind help to solve this problem, its about reaction decomposition of hydrogen peroxide.. which is true? (i) H2O2(l) → H2O(l) + O(g) or (ii) 2H2O2(l) → 2H2O(l) + 2O2(g) the former reaction produce monoatomic oxygen, named On , and act as oxidizing agent. (could anyone tell how strength is it?) while, the latter reaction is common reaction.. what the eligibility for both reaction..? thanks a lot for your prompt attention to this matter.. sincerely, Nanda -Dept.Physical Chem. Padjadjaran University, Indonesia-

We all learned this: Zn(s) + 2HCl(aq) --> ZnCl2(aq) + H2(g) Recently I saw a paper that claimed hydrogenation of graphene using the reaction between HCl and Zn. Unfortunately, they did no studies on the mechanism of this reaction (just "it worked" instead of "why it worked"). Past studies have shown that H2 or H+ will not hydrogenate graphene. However hydrogen (as well as fluorine) radicals do react with graphene. My question is: Do you form, even for a short time, hydrogen radicals in the reaction with Zn and HCl? I know in gas/solid phase you may see a radical on the surface which meets another to form H2. That mechanism seems less plausible at higher p…

Hi, Does anyone know what lithium precursor is strong enough to pop off the hydrogens from di-hydro lipoic acid (DHLA)? Lipoic acid is normally a disulfide bond, DHLA is the reduced form with the disulfide bond cleaved to produce two free thiol groups. The following is the structure of the compound I would like to make, it's simply DHLA with the hydrogen bonds replaced with lithium: C(CCC(=O)[O-].[Li+])CC(CC[s-])[s-].[Li+].[Li+] I tried lithium hydroxide and a white precipitate formed. However, I think this was merely lithium carbonate: 2LiOH + CO2 -> Li2CO3 + H2O. For both of the thiols in DHLA, they reportedly have a pKa of 10.7 (25C). Thanks…

I always wanted to know this! What is the real essence in saying -ous acid, -ic acid? And, if possible i want to know, whats the difference between, ite, ate, ide, etc? Thank you

i have tried putting a cube of ice in water and one in air and found that ice melts faster and the same with the dry ice so i am confused about it can someone help me?

Does anybody have any suggestions on how to synthesize this molecule? And please! If you have any objections against the structure of the molecule don't mind telling me! You see I'm quite a newbie at chemistry so I'm really grateful if I get feedback! Thanks! (btw, please don't mind the failed molecular structure in the corner)

Lastly I made CaC2 from lime powder (CaO) and crushed BBQ charcoal. I heated it with an arc welder with carbon rods attached. See the result on the site http://arcmelt.velp.info and click on the video of Nov 24. Sometimes it succeeds sometimes not. I use a concrete brick to put the mixture in. Did somebody try something similar ?

How can we calculate the solubility of AlPO4 and FePO4 under different pH values? Any comments, thanks!

Are nanotubes solubles or are they dispersible Nanotubes with functional groups are soluble . example nanotubes with hydroxy group attached , are they soluble . Thank you .

Ok ok, ok, so I just watched a video thats said theres chlorine in most tap water, so, is this true? if it is, the amount in tap water is harmful or not, http://www.youtube.com/watch?v=qPKE9phMGSg, there

I was looking at platinum electrodes on the internet, and I noticed that they sell an alloy of platinum and iridium in a wire (80% platinum). It is a lot less money than other electrodes. Would that work for electrolysis of water, and as a catalyst in alkaline/PEM fuel cells?