Inorganic Chemistry

sodium nitrate, NaNO3, is an ionic compound with a melting point of about 320 degrees C and a decomposition temperature of about 380 degrees C. If I was to melt sodium nitrate to try to produce liquid sodium through electrolysis, would there be any poisonous gases produced from the electrolysis? I know that NO is poisonous and especially NO2. Would either of these be produced and are there any other hidden dangers (other than the fact that it produces sodium, which is rather unstable, and involves high temperatures)? If thats too dangerous, what about electrolysis of molten baking soda (NaHCO3)?

ok here goes :'( i cant seem to handle this question, help asap as in any second after i post this would be rather impressive: calculate the mass of KClO3 required to produce 1.00dm3 (at 20 degrees C and 101.3 kPa) of oxygen. molar gas volume = 24000 cm3 mol-1 at 20 degrees C and 101.31 kPa does it have anythin to do with PV=nRT seriously im well confused i have the answer HOWEVER i dont understand how it has been achieved. *sigh*

hello everyone i hope you can help me out.... Today my chemistry teacher gave us this experiment: to find out why the percent yield of the production of CO2, that you get from the reaction when a alka-selzer is put into water, is only 1-6% the chemical reaction is as follows NaHCO3 + H20 ---> CO2 + H2O + NaOH I used 1.78 grams of Alka-selzer (NaHCO3) or 0.02119 moles After doign the math on paper i should be getting 0.02119 moles of CO2, but in reality i can only collect .000447 moles. Could anyone explain as to why it is such a lower percent yield? My teacher also said that the secret lies within the indegeridents, (which are aspri…

How do you tell how many moles of an element are in a molecule??? Ex. CH4 (Methane). How would you be able to tell how many moles of carbon and how many moles of hydrogen???????

Anyone know the chemical formula for when you heat a piece of magnesium ribbon???

Hello, I'm having trouble writing out total ionic equations. In a total ionic equation, I know to write the ions separately as they exist in aqueous solution, and to leave solids as they are. But sometimes I come across examples where, even tho' one of the reactants or products is aqueous, it isn't broken up in ionic form. This is also giving me trouble writing net ionic equations, as I don't know what the spectator ions are. So my question is, what are the guidelines in writing total ionic equations? Any help would be appreciated, thanks...

Does anyone know the Lewis Structure for: A. HOCN (HO-CN) Polar or Nonpolar? B. COS Polar or Nonpolar?

I'v had this problem. How much iodine will we make from 350gr Sodium iodate reacting with sodium hydrogen sulphide. Sorry about my english, hope I wrote it good.

For a Double Replacement Reaction, I don't understand how or when we use the "Rule for the Solubility of Salts in Water" Also....... How can you easily predict what state a compound is in, in any chemical reaction. Lastly....... How can you easily tell the difference between a Single Replacement Reaction and a Synthesis/Combination/Composition Reaction because i find it difficult to tell when a synthesis reaction is in the following form "element+compound---------> More Complex Compound" because a single replacement reaction is in the similar form when given the reactants. -Thanks for Any Help

Hi everyone! i have two qusestion that desperatly need answering. I hope somebody out the can help with the answers Outline the principles of a theory that is used to describe the shapes of simple covalent molecules. Use the theory to explain the shapes of the following molecules: a) BH3 b)PCl3 c)SiH4 d)H2S And my darlings; In terms of structure and bonding explain the difference in physical properties between diamond and graphite. A Big thank you to anybody that can help me! x

Does anybody know the answers to these questions? Benzene, Magnesium chloride, Potassium iodide, Sodium chloride, Hydrogen Chloride, Tetrechloridemethane. List the compounds whose solids probably have simple molecular crystal structures. List the compounds whose solids probably have ionic crystal structures. Wich of the compounds would you expect to conduct elctricity when molten? What does your answer suggest about the kind of particles which may be present in the crystals of these compounds? A big thankyou to anybody that can answer these for me x

Hi everyone! I am a little bit stuck on these questions. Use the concepts of electronegativity and polarisation to interpret the bonding in (a) AgBr and (b)HBr. Using the atom of chlorine - 35 explain the terms (a) mass number and (b) electron configuration. (ii) How can the idea of electron configuration be used to explain chemical reactivity? Can anybody help? Thank you for taking the time to read this.

I recently mixed together powdered ferric ammonium sulfate, borax and sodium carbonate. I then heated the powder over a Bunsen burner and the mixture started turning red as the reaction continued it got redder. I didn’t smell the so2 or ammonia one would expect when heating FeNh4(SO4)2, does anyone know what happened in this reaction?

Funny thing happened. Received some chemicals yesterday, and inside the box a 1L container of potassium chromate had broken. The plastic container it was in was very dodgy looking and there was no plastic bag or other protection around it. This had resulted in everything getting a bit, well, yellow. While wearing gloves I removed all the other containers from the box, and cleaned them afterwards from any yellow dust I could see. As some of you may know, potassium chromate is a compound of hexavalent chromium, which is a human carcinogen. During the handling and disposal of the box I could occasionally smell a rather distinct smell which I can only presume was due to t…

This morning I`ve just perfected Red I`ve been experimenting with simple Acid/Metal combinations seeking the most Vivid of all the basic color primaries. Red: Cobalt metal + Nitric acid Green: Nickel metal + Nitric acid Blue: Copper metal + Nitric acid (interestingly these are all side by side in the periodic table too) the depth of colors to these salts is amazing! but the only problem is these are all for Addative color synthesis, for Subtractive color synthesis I need a Yellow. thus far I`ve come up with nothing at all convincing. any ideas?

I boiled roughly 50 grams of raw uncut Emeralds last night in aqua regia. much of the grey crystaline limestone has dissolved even right down into the inclusions, the Mica schist also comes off now quite easily. however the aqua regia soln is now a deep gold color almost orange and perfectly clear. it looks a little like Gold Chloride soln, now I realise this unlikely to be the case, and that the majarity of it will be Calcium salts, but what causes the Gold color? beryllium nitrate is yellow, and since emeralds contain a lot of beryllium could that be it? it`ll not be Cr salts, but it May be Vanadium salts, I have no listing for that color in my books though. an…

Hey all, my chem. teacher decided to give us some advanced questions for us to think about for next class period. We havent talked about them yet and i have had trouble with getting the answers. Any help on the following questions would be great. A.) Assign oxidation numbers to all atoms in the following compounds. a.) (NH4)HPO4 b.) CO c.) XeOF4 B.) Specify which of the following are oxidation-reduction reactions and identify the reducing agent, the substance that is oxidized, the oxidizing agent and the substance being reduced. a.) O3 (g) + NO(g) --> O2(g) + NO2(g) b.) Cr2O72-(aq) + 2OH-(ag) --> 2CrO42-(aq) + H2O(l) c.) 2CuCl(aq)--&g…

I tried electrolysis of sucrose (pure cane sugar) not expecting anything to happen. I used a 9 volt battery and two aluminum electrodes. When the electrodes got close enough a white solid was formed witch soon turned into a gas and bubbled , can anyone explain what happened. Also I think I may have synthesized methyl chloride by electrolyzing a mixture of salt and acetic acid according to Kolbe Electrolysis ethane and CO2 are formed form the acetic acid, the ethane would combine with the HCL from the salt forming methyl chloride.

Today my colleague at college want my help about valence & molecular orbital theory.There was a sentences in a book which I could not explain well.that was" Molecular orbital theory based upon delocalizations while valence bond theory based upon ionic_covalent resonance ,when electron moves from less electronegative atom to more electronegative atom" Please help me ,what is ionic_covalent resonance?

Hello. Does molten Sn attack 24K gold? Just had my electronics soldering iron tip jacketed in 0.5mm pure gold and eroded in a minute at 800ºF! (There is a chance it was a poorly done job by the goldsmith) What other metals will get wet with 96.5% tin solder and not degrade with oxides, corrosion, staying tinned ? Ag, Pt, Ti,...? Miguel

What is the smallest particle which we know exists, i.e. not theoretical For me, the smallest particle is a quark, that i know.

Hi. What interesting thing to do with it ? It's a light green powder in a glass vial; the box is marked as "radium" and intended to mix with a clear glue also supplied in the kit. Am still alive (I think) after that stuff has been in my house for 30 years. Miguel

Please can someone clean up a wikipedia artice relating to the use of white phosphorus. the article that needs attention is here: http://en.wikipedia.org/wiki/Fallujah%2C_The_Hidden_Massacre Basically the documentary includes many images of casualties of the attack on Fallujah, attempting to make a case for crimes against humanity. US originally claimed that WP was only used for smoke screening, later conceding that it was fired into strong holds to 'shake and bake' insurgents. However the documentary claims that WP was used in an indiscriminate manner, being fired from helicopters onto regions of the city, thus constituting crimes against humanity. The film…

when going down Group 14 ( carbon to lead ) the boiling point of chlorides of group 14 increase down the group However the boiling point of the CCl4 has a extremely high boiling point relatively !!!!! Why is it so ???

according to the phase diagram : the melting curve of the helium is parallel to the y-axis thats mean that the melting point of the helium is not affected by the pressure !!! Wy is it so ??