Inorganic Chemistry

Why does copper turn blue when it is oxidized (rusted)? Does it have to do with the arrangement of electrons? Anyone help would be greatly appreciated.

What volume of alcohol can ideally be obtained from 1kg. of sucrose? Specifically by fermentation. I specify sucrose, assuming that not all sugars have the same conversion rate, and not all sugars are fermentable. (e.g. lactose). This question arises from curiousity about 1. home brewing, and 2. producing alcohol as fuel. As a side issue, perhaps for another forum, I wondered 3, about the total energy input required to produce alcohol from, for example, Brazillian sugarcane. (of interest to seekers after alternative energy sources). Figures are obtainable for alcohol yield per hectare of brazilian sugar cane, but not more detailed information.

To start i am a chemistry novice as such looking for help. I have a sample of building rendor, and need determine the lime content of the example. My theory (spot the flaws please), is to: (1)crush the sample into powder form (2) add a diluted Hydrochloric acid, (3)heat to drive off co2 (4)add water inorder to filter(to filter off aggregates from the building rendor, eg sands, stones etc) *note making weight measurements after all procedures My theory is that the lime will be broken down into its salts, which will be soluble in water, so i will be left with a solution of water and calcuim , magnesium, silca salts etc(lime). My questions are: I…

anyone know the Ea required for this rxn? also, i'm not sure if the chlorine gas i get from bleach + vinegar will be enough for this rxn

Hello, Could you find the structure and the geometry of the following compounds ? It will help me to analyse my IR spectrums. Ni(SCN)2(PPh3)2 MoO2(C5H7O2)2 (NH4)2MoS4 (Pr4N)2[(CN)CuS2MoS2] Cu(PPh3)2(NO3) In fact I mean by "giving the structure" is like what I do in enclosed document for [(Ph3P)2CuS2MoS2Cu(PPh3)] (see enclosed document) Thank you very much for your help

Hello, searching for experienced experts. Keywords: lead dioxide anode, perchlorate, chlorate, power supply. World wide web has been searched throw up and down, now I would like to discuss about it with practics. I’ve done some, but I’m not satisfied with: 1. Lead dioxide connection 2. Power supply

Here is an age old observation. If anyone has had a glass of ice water they will notice that the ice floats on top. This is due to water expanding when it becomes ice making it less dense than liquid water. The question is, why does this anomaly occur?

Good morning, I have problems in balancing a synthesis reaction. The pathway is given : (NH4)6Mo7024.4H2O +28 H2S+8 NH4OH--> 7(NH4)2MoS4 + 36 H20 NH4)2MoS4 (CuCN/KCN/[Pr4N)Br]) --> (Pr4N)2[(CN)CuS2MoS2] (Pr4N)2[(CN)CuS2MoS2] + Cu(PPh3)2(NO3) --> [(Ph3P)2CuS2MoS2Cu(PPh3)] I don't really see how to equilibrate the 2 last ones and I have also problems to explain really what occurs during this synthesis. How do we explain the fact that we use KCN AND CuCN? Could we also form KBr and NH4CN for the second reaction? I found on a contribution from the department of chemistry in Australia. The follwing paragraph explains how works the second reaction : …

In this reaction, a solution of silver nitrate, potassium hydroxide, glucose, and a little ammonia are put into a flask. The flask is swirled, and the glucose reduces the silver ions and they are deposited on the wall of the flask. This reaction is a little more detailed than that, but I just wanted to give a little backround. Any ways, the question: Could sodium hydroxide be used in place of the posassium hydroxide. Thanks

is this explaination right? I am a little confused about what the "results" of a titration is supposed to mean..can someone make it more clearly.. "Increase in volume of the acid in the flask has no effect on the results of a titration because since titration reaches its equivalence point when the number of moles of acid equals the number of moles of base, increasing the volume of acid simply means more volume of base is required for the titration to reach its equivalence point."

One of my Hobbies is extracting metals (rare types where possible). I did an experiment this summer whilst camping by the Sea. I have 8 powerfull ring magnets from microwave ovens, strung together with nylon zip ties, that I then attatched to a lage rock while the Sea was out, I waited till it came in and went out again then collected my magnets,,, they were covered in manetic metal particles. When I got back home I washed it off in clean water then dried these particles (about an once), then let them sit in a flask with Hydrochloric acid. surely enough, the liquid went a golden yellow color indicative of Iron Chloride. here`s the snag though, How is it possible that t…

How do you make an extremely corrosive acid with houshold items. Wanted to see if I could burn a hole through cement and other strong items.

Fe(OH)3 is a strong base, but it has low solubility..what does that say about its pH? does it mean that very small amount can be dissovled in water, but the part that does dissovle is 100% ionized? If so..is the resulting solution basic?

Is There any way to Potassium Niterate out of Potassium Chloride.

Alloys are mixture of metals, metal A exists in the space between metal B particles. I was told that mercury can form alloy with most metals while with an exception of iron. So I would like to know why it can't form alloy with iron, but others.

Hey, I was just wondering what process of reactions is going on in an instant ice pack. I've included a link with all the ingredients. "Endothermic composition and cold pack Document: United States Patent 4081256 Abstract: A particulate composition producing an endothermic reaction when mixed with water, and a cold pack containing such a composition, and water isolated therefrom until the intended time of use. The composition consists essentially of, in parts by weight, about 65 to about 130 parts urea, about 35 to about 80 parts hydrated sodium acetate (Na C.sub.2 H.sub.3 O.sub.2 .multidot.3H.sub.2 O), about 18 to about 40 parts potassium chloride, potassi…

I was sitting in Trig today and I remember reading that KNO3 will decompose into Nitrogen Oxides when heated. So if you had a container that you could heat KNO3 to decompostion with and have the resulting oxides bubbled into water, Couldn't you get HNO3 without distillation?

The definition of co-ordination of a complex ion is the number of atoms datively bonded to the central ion. It there a situation where one atom in a ligand can donate two lone pairs of electrons to the central ion?

what do nonprotonated and protonated mean?

What would the earth be like if H20 was a linear molecule? I was thinking about this during chemistry:confused:

I have 5 g of a metal. What are some tests I can do to determine what types of metals are in it?

I am a grade 10 student studying AP chemistry what factors determine something's ability to neutralize? does it have somrthing to do with concentration? or pH? I'm confused

i have some quesiotns about equlibrium..i have a test coming up when an equlibrium system shifts to the left..what is it saying about the forward and reverse reaction rate? reverse reaction is faster since it is shifting to the left? or forward reaction is faster so it has to shift to the left to reestablish equlibrium? maybe im not very clear about the concept...all i know is at equlibrium forward and reverse reactions occur at equal rate..

Dear All, What would be the best method of preparing silver nitrate AgNO3 using Nitric acid HNO3. Would like the EXACT quantitative proportions of metallic Silver & Molarity of HNO3. The solution got was highly acidic (pH 1) even though no more silver reacted. Is heat necessary ? Is there a catalyst to speed up the reaction ? No text book gives this.Thanks in advance, jmarjorie chemicals555@yahoo.com

Here is an interesting observation, is we mix NaOH or HCl into water it is very exothermic and the solution gets warm or hot. Yet if we mix the same amount of NaCl into water it is endothermic and the solution gets cool. Does this imply that the Na+ aspect of NaOH and the Cl- aspect of HCl are also both endothermic, and that extra exothermic comes from the OH- and H+ (H30+), respectively, even though charges are the same?